397498838 has 16 divisors (see below), whose sum is σ = 653377536. Its totient is φ = 179868840.

The previous prime is 397498819. The next prime is 397498841. The reversal of 397498838 is 838894793.

It is a super-2 number, since 2×397498838² = 316010652422700488, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 35606 + ... + 45417.

It is an arithmetic number, because the mean of its divisors is an integer number (40836096).

Almost surely, 2^397498838 is an apocalyptic number.

397498838 is a deficient number, since it is larger than the sum of its proper divisors (255878698).

397498838 is a wasteful number, since it uses less digits than its factorization.

397498838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81259.

The product of its digits is 10450944, while the sum is 59.

The square root of 397498838 is about 19937.3728961466. The cubic root of 397498838 is about 735.2673610460.

The spelling of 397498838 in words is "three hundred ninety-seven million, four hundred ninety-eight thousand, eight hundred thirty-eight".