900742069 has 4 divisors (see below), whose sum is σ = 900850860. Its totient is φ = 900633280.

The previous prime is 900742067. The next prime is 900742133. The reversal of 900742069 is 960247009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960247009 = 21169 ⋅45361.

It can be written as a sum of positive squares in 2 ways, for example, as 573602500 + 327139569 = 23950^2 + 18087^2 .

It is a cyclic number.

It is not a de Polignac number, because 900742069 - 2¹ = 900742067 is a prime.

It is a super-2 number, since 2×900742069² = 1622672549732801522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900742061) 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, 40852 + ... + 58909.

It is an arithmetic number, because the mean of its divisors is an integer number (225212715).

Almost surely, 2^900742069 is an apocalyptic number.

It is an amenable number.

900742069 is a deficient number, since it is larger than the sum of its proper divisors (108791).

900742069 is an equidigital number, since it uses as much as digits as its factorization.

900742069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108790.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 900742069 is about 30012.3652683356. The cubic root of 900742069 is about 965.7546671687.

It can be divided in two parts, 9007 and 42069, that added together give a square (51076 = 226²).

The spelling of 900742069 in words is "nine hundred million, seven hundred forty-two thousand, sixty-nine".