40917939 has 8 divisors (see below), whose sum is σ = 55325952. Its totient is φ = 26894280.

The previous prime is 40917937. The next prime is 40917953. The reversal of 40917939 is 93971904.

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

It is not a de Polignac number, because 40917939 - 2¹ = 40917937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40917939.

It is not an unprimeable number, because it can be changed into a prime (40917937) 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, 95839 + ... + 96264.

It is an arithmetic number, because the mean of its divisors is an integer number (6915744).

Almost surely, 2^40917939 is an apocalyptic number.

40917939 is a deficient number, since it is larger than the sum of its proper divisors (14408013).

40917939 is a wasteful number, since it uses less digits than its factorization.

40917939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192177.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 40917939 is about 6396.7131403558. The cubic root of 40917939 is about 344.5915182267.

The spelling of 40917939 in words is "forty million, nine hundred seventeen thousand, nine hundred thirty-nine".