397540970 has 16 divisors (see below), whose sum is σ = 746686080. Its totient is φ = 152102544.

The previous prime is 397540967. The next prime is 397541003. The reversal of 397540970 is 79045793.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863990 + ... + 864449.

It is an arithmetic number, because the mean of its divisors is an integer number (46667880).

Almost surely, 2^397540970 is an apocalyptic number.

397540970 is a deficient number, since it is larger than the sum of its proper divisors (349145110).

397540970 is a wasteful number, since it uses less digits than its factorization.

397540970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728469.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 397540970 is about 19938.4294767667. The cubic root of 397540970 is about 735.2933378012.

The spelling of 397540970 in words is "three hundred ninety-seven million, five hundred forty thousand, nine hundred seventy".