45090769 has 4 divisors (see below), whose sum is σ = 45120240. Its totient is φ = 45061300.

The previous prime is 45090761. The next prime is 45090797. The reversal of 45090769 is 96709054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45090769 - 2³ = 45090761 is a prime.

It is a super-2 number, since 2×45090769² = 4066354898022722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45090761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12307 + ... + 15544.

It is an arithmetic number, because the mean of its divisors is an integer number (11280060).

Almost surely, 2^45090769 is an apocalyptic number.

It is an amenable number.

45090769 is a deficient number, since it is larger than the sum of its proper divisors (29471).

45090769 is a wasteful number, since it uses less digits than its factorization.

45090769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29470.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 45090769 is about 6714.9660460795. The cubic root of 45090769 is about 355.9283221639.

It can be divided in two parts, 450 and 90769, that added together give a palindrome (91219).

The spelling of 45090769 in words is "forty-five million, ninety thousand, seven hundred sixty-nine".