40001999970 has 64 divisors (see below), whose sum is σ = 101447147520. Its totient is φ = 10074237888.

The previous prime is 40001999867. The next prime is 40001999971. The reversal of 40001999970 is 7999910004.

It is not an unprimeable number, because it can be changed into a prime (40001999971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312414 + ... + 421433.

It is an arithmetic number, because the mean of its divisors is an integer number (1585111680).

Almost surely, 2^40001999970 is an apocalyptic number.

40001999970 is an abundant number, since it is smaller than the sum of its proper divisors (61445147550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40001999970 is a wasteful number, since it uses less digits than its factorization.

40001999970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733959.

The product of its (nonzero) digits is 183708, while the sum is 48.

The spelling of 40001999970 in words is "forty billion, one million, nine hundred ninety-nine thousand, nine hundred seventy".