900149831 has 8 divisors (see below), whose sum is σ = 1052667264. Its totient is φ = 753613560.

The previous prime is 900149819. The next prime is 900149839. The reversal of 900149831 is 138941009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-900149831 is a prime.

It is a super-2 number, since 2×900149831² = 1620539436498657122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 900149791 and 900149800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900149839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1494965 + ... + 1495566.

It is an arithmetic number, because the mean of its divisors is an integer number (131583408).

Almost surely, 2^900149831 is an apocalyptic number.

900149831 is a deficient number, since it is larger than the sum of its proper divisors (152517433).

900149831 is a wasteful number, since it uses less digits than its factorization.

900149831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990581.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 900149831 is about 30002.4970794099. The cubic root of 900149831 is about 965.5429594994.

The spelling of 900149831 in words is "nine hundred million, one hundred forty-nine thousand, eight hundred thirty-one".