40634939 has 8 divisors (see below), whose sum is σ = 43361040. Its totient is φ = 37967616.

The previous prime is 40634929. The next prime is 40634959. The reversal of 40634939 is 93943604.

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

It is a cyclic number.

It is not a de Polignac number, because 40634939 - 2²⁴ = 23857723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40634929) 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, 13262 + ... + 16035.

It is an arithmetic number, because the mean of its divisors is an integer number (5420130).

Almost surely, 2^40634939 is an apocalyptic number.

40634939 is a deficient number, since it is larger than the sum of its proper divisors (2726101).

40634939 is a wasteful number, since it uses less digits than its factorization.

40634939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29389.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 40634939 is about 6374.5540236161. The cubic root of 40634939 is about 343.7952489636.

The spelling of 40634939 in words is "forty million, six hundred thirty-four thousand, nine hundred thirty-nine".