397209954 has 16 divisors (see below), whose sum is σ = 828960192. Its totient is φ = 126646608.

The previous prime is 397209949. The next prime is 397209959. The reversal of 397209954 is 459902793.

It is an interprime number because it is at equal distance from previous prime (397209949) and next prime (397209959).

It is not an unprimeable number, because it can be changed into a prime (397209959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439029 + ... + 1439304.

It is an arithmetic number, because the mean of its divisors is an integer number (51810012).

Almost surely, 2^397209954 is an apocalyptic number.

397209954 is an abundant number, since it is smaller than the sum of its proper divisors (431750238).

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

397209954 is a wasteful number, since it uses less digits than its factorization.

397209954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878361.

The product of its (nonzero) digits is 612360, while the sum is 48.

The square root of 397209954 is about 19930.1267933749. The cubic root of 397209954 is about 735.0891983004.

The spelling of 397209954 in words is "three hundred ninety-seven million, two hundred nine thousand, nine hundred fifty-four".