397869801 has 16 divisors (see below), whose sum is σ = 632638464. Its totient is φ = 217468944.

The previous prime is 397869793. The next prime is 397869803. The reversal of 397869801 is 108968793.

It is not a de Polignac number, because 397869801 - 2³ = 397869793 is a prime.

It is a super-3 number, since 3×397869801³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (397869803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411391 + ... + 412356.

It is an arithmetic number, because the mean of its divisors is an integer number (39539904).

Almost surely, 2^397869801 is an apocalyptic number.

It is an amenable number.

397869801 is a deficient number, since it is larger than the sum of its proper divisors (234768663).

397869801 is a wasteful number, since it uses less digits than its factorization.

397869801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823780.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 397869801 is about 19946.6739332652. The cubic root of 397869801 is about 735.4960176310.

The spelling of 397869801 in words is "three hundred ninety-seven million, eight hundred sixty-nine thousand, eight hundred one".