40000400421986 has 8 divisors (see below), whose sum is σ = 60264920460240. Its totient is φ = 19912093601908.

The previous prime is 40000400421979. The next prime is 40000400422061. The reversal of 40000400421986 is 68912400400004.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44053303976 + ... + 44053304883.

It is an arithmetic number, because the mean of its divisors is an integer number (7533115057530).

Almost surely, 2^{40000400421986} is an apocalyptic number.

40000400421986 is a deficient number, since it is larger than the sum of its proper divisors (20264520038254).

40000400421986 is a wasteful number, since it uses less digits than its factorization.

40000400421986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88106609088.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 40000400421986 in words is "forty trillion, four hundred million, four hundred twenty-one thousand, nine hundred eighty-six".