45309689 has 4 divisors (see below), whose sum is σ = 45326160. Its totient is φ = 45293220.

The previous prime is 45309683. The next prime is 45309697. The reversal of 45309689 is 98690354.

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 45309689 - 2¹² = 45305593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45309683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2999 + ... + 9980.

It is an arithmetic number, because the mean of its divisors is an integer number (11331540).

Almost surely, 2^45309689 is an apocalyptic number.

It is an amenable number.

45309689 is a deficient number, since it is larger than the sum of its proper divisors (16471).

45309689 is a wasteful number, since it uses less digits than its factorization.

45309689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16470.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 45309689 is about 6731.2472098416. The cubic root of 45309689 is about 356.5034144818.

The spelling of 45309689 in words is "forty-five million, three hundred nine thousand, six hundred eighty-nine".