397922454 has 24 divisors (see below), whose sum is σ = 863035680. Its totient is φ = 132506928.

The previous prime is 397922449. The next prime is 397922509. The reversal of 397922454 is 454229793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8064 + ... + 29340.

It is an arithmetic number, because the mean of its divisors is an integer number (35959820).

Almost surely, 2^397922454 is an apocalyptic number.

397922454 is an abundant number, since it is smaller than the sum of its proper divisors (465113226).

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

397922454 is a wasteful number, since it uses less digits than its factorization.

397922454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22324 (or 22321 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 397922454 is about 19947.9937337067. The cubic root of 397922454 is about 735.5284607096.

The spelling of 397922454 in words is "three hundred ninety-seven million, nine hundred twenty-two thousand, four hundred fifty-four".