396401558 has 16 divisors (see below), whose sum is σ = 686553504. Its totient is φ = 168134400.

The previous prime is 396401543. The next prime is 396401561. The reversal of 396401558 is 855104693.

It is a Curzon number.

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, 144593 + ... + 147308.

It is an arithmetic number, because the mean of its divisors is an integer number (42909594).

Almost surely, 2^396401558 is an apocalyptic number.

396401558 is a deficient number, since it is larger than the sum of its proper divisors (290151946).

396401558 is a wasteful number, since it uses less digits than its factorization.

396401558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292007.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 396401558 is about 19909.8357100203. The cubic root of 396401558 is about 734.5901786177.

The spelling of 396401558 in words is "three hundred ninety-six million, four hundred one thousand, five hundred fifty-eight".