40931901 has 24 divisors (see below), whose sum is σ = 60386040. Its totient is φ = 26712576.

The previous prime is 40931893. The next prime is 40931911. The reversal of 40931901 is 10913904.

It can be written as a sum of positive squares in 4 ways, for example, as 3404025 + 37527876 = 1845^2 + 6126^2 .

It is not a de Polignac number, because 40931901 - 2³ = 40931893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40931911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109551 + ... + 109923.

It is an arithmetic number, because the mean of its divisors is an integer number (2516085).

Almost surely, 2^40931901 is an apocalyptic number.

It is an amenable number.

40931901 is a deficient number, since it is larger than the sum of its proper divisors (19454139).

40931901 is a wasteful number, since it uses less digits than its factorization.

40931901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 40931901 is about 6397.8043890072. The cubic root of 40931901 is about 344.6307075552.

The spelling of 40931901 in words is "forty million, nine hundred thirty-one thousand, nine hundred one".