400040399996 has 24 divisors (see below), whose sum is σ = 703798308864. Its totient is φ = 198955355120.

The previous prime is 400040399981. The next prime is 400040400047. The reversal of 400040399996 is 699993040004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14856281 + ... + 14883183.

It is an arithmetic number, because the mean of its divisors is an integer number (29324929536).

Almost surely, 2^400040399996 is an apocalyptic number.

It is an amenable number.

400040399996 is a deficient number, since it is larger than the sum of its proper divisors (303757908868).

400040399996 is a wasteful number, since it uses less digits than its factorization.

400040399996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46561 (or 46559 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 53.

The spelling of 400040399996 in words is "four hundred billion, forty million, three hundred ninety-nine thousand, nine hundred ninety-six".