396913831890 has 64 divisors (see below), whose sum is σ = 974858011776. Its totient is φ = 103370383872.

The previous prime is 396913831889. The next prime is 396913831927. The reversal of 396913831890 is 98138319693.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20910444 + ... + 20929416.

It is an arithmetic number, because the mean of its divisors is an integer number (15232156434).

Almost surely, 2^396913831890 is an apocalyptic number.

396913831890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

396913831890 is an abundant number, since it is smaller than the sum of its proper divisors (577944179886).

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

396913831890 is a wasteful number, since it uses less digits than its factorization.

396913831890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35243.

The product of its (nonzero) digits is 7558272, while the sum is 60.

The spelling of 396913831890 in words is "three hundred ninety-six billion, nine hundred thirteen million, eight hundred thirty-one thousand, eight hundred ninety".