40402039 has 8 divisors (see below), whose sum is σ = 41718528. Its totient is φ = 39097440.

The previous prime is 40402031. The next prime is 40402051. The reversal of 40402039 is 93020404.

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 40402039 - 2³ = 40402031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402031) 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, 4209 + ... + 9925.

It is an arithmetic number, because the mean of its divisors is an integer number (5214816).

Almost surely, 2^40402039 is an apocalyptic number.

40402039 is a deficient number, since it is larger than the sum of its proper divisors (1316489).

40402039 is a wasteful number, since it uses less digits than its factorization.

40402039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 40402039 is about 6356.2598279177. The cubic root of 40402039 is about 343.1371668750.

The spelling of 40402039 in words is "forty million, four hundred two thousand, thirty-nine".