398820536 has 16 divisors (see below), whose sum is σ = 754650600. Its totient is φ = 197580384.

The previous prime is 398820517. The next prime is 398820577. The reversal of 398820536 is 635028893.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 227810 + ... + 229553.

Almost surely, 2^398820536 is an apocalyptic number.

It is an amenable number.

398820536 is a deficient number, since it is larger than the sum of its proper divisors (355830064).

398820536 is a wasteful number, since it uses less digits than its factorization.

398820536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457478 (or 457474 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 398820536 is about 19970.4916314046. The cubic root of 398820536 is about 736.0813896682.

The spelling of 398820536 in words is "three hundred ninety-eight million, eight hundred twenty thousand, five hundred thirty-six".