397134442 has 4 divisors (see below), whose sum is σ = 595701666. Its totient is φ = 198567220.

The previous prime is 397134427. The next prime is 397134469. The reversal of 397134442 is 244431793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 395970201 + 1164241 = 19899^2 + 1079^2 .

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 as a sum of consecutive naturals, namely, 99283609 + ... + 99283612.

Almost surely, 2^397134442 is an apocalyptic number.

397134442 is a deficient number, since it is larger than the sum of its proper divisors (198567224).

397134442 is a wasteful number, since it uses less digits than its factorization.

397134442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198567223.

The product of its digits is 72576, while the sum is 37.

The square root of 397134442 is about 19928.2322848766. The cubic root of 397134442 is about 735.0426137232.

The spelling of 397134442 in words is "three hundred ninety-seven million, one hundred thirty-four thousand, four hundred forty-two".