40899231 has 6 divisors (see below), whose sum is σ = 59076680. Its totient is φ = 27266148.

The previous prime is 40899227. The next prime is 40899233. The reversal of 40899231 is 13299804.

It is not a de Polignac number, because 40899231 - 2² = 40899227 is a prime.

It is a super-2 number, since 2×40899231² = 3345494192782722, 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 (40899233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2272171 + ... + 2272188.

Almost surely, 2^40899231 is an apocalyptic number.

40899231 is a deficient number, since it is larger than the sum of its proper divisors (18177449).

40899231 is a wasteful number, since it uses less digits than its factorization.

40899231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4544365 (or 4544362 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 40899231 is about 6395.2506596693. The cubic root of 40899231 is about 344.5389935801.

The spelling of 40899231 in words is "forty million, eight hundred ninety-nine thousand, two hundred thirty-one".