900699435857 has 4 divisors (see below), whose sum is σ = 969984007860. Its totient is φ = 831414863856.

The previous prime is 900699435833. The next prime is 900699435907. The reversal of 900699435857 is 758534996009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142309263121 + 758390172736 = 377239^2 + 870856^2 .

It is a cyclic number.

It is not a de Polignac number, because 900699435857 - 2¹² = 900699431761 is a prime.

It is a super-2 number, since 2×900699435857² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 900699435793 and 900699435802.

It is not an unprimeable number, because it can be changed into a prime (900699435827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34642285982 + ... + 34642286007.

It is an arithmetic number, because the mean of its divisors is an integer number (242496001965).

Almost surely, 2^900699435857 is an apocalyptic number.

It is an amenable number.

900699435857 is a deficient number, since it is larger than the sum of its proper divisors (69284572003).

900699435857 is a wasteful number, since it uses less digits than its factorization.

900699435857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69284572002.

The product of its (nonzero) digits is 73483200, while the sum is 65.

The spelling of 900699435857 in words is "nine hundred billion, six hundred ninety-nine million, four hundred thirty-five thousand, eight hundred fifty-seven".