40029390642909 has 16 divisors (see below), whose sum is σ = 54789349215744. Its totient is φ = 25981837316400.

The previous prime is 40029390642863. The next prime is 40029390643031. The reversal of 40029390642909 is 90924609392004.

It is a happy number.

It is not a de Polignac number, because 40029390642909 - 2¹⁵ = 40029390610141 is a prime.

It is a super-2 number, since 2×40029390642909² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40029390642809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498843087 + ... + 498923324.

It is an arithmetic number, because the mean of its divisors is an integer number (3424334325984).

Almost surely, 2^{40029390642909} is an apocalyptic number.

It is an amenable number.

40029390642909 is a deficient number, since it is larger than the sum of its proper divisors (14759958572835).

40029390642909 is a wasteful number, since it uses less digits than its factorization.

40029390642909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997766768.

The product of its (nonzero) digits is 7558272, while the sum is 57.

The spelling of 40029390642909 in words is "forty trillion, twenty-nine billion, three hundred ninety million, six hundred forty-two thousand, nine hundred nine".