397970980 has 24 divisors (see below), whose sum is σ = 911715840. Its totient is φ = 144716640.

The previous prime is 397970957. The next prime is 397970983. The reversal of 397970980 is 89079793.

It is not an unprimeable number, because it can be changed into a prime (397970983) 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, 904260 + ... + 904699.

It is an arithmetic number, because the mean of its divisors is an integer number (37988160).

Almost surely, 2^397970980 is an apocalyptic number.

It is an amenable number.

397970980 is an abundant number, since it is smaller than the sum of its proper divisors (513744860).

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

397970980 is a wasteful number, since it uses less digits than its factorization.

397970980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808979 (or 1808977 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 397970980 is about 19949.2100094214. The cubic root of 397970980 is about 735.5583583299.

The spelling of 397970980 in words is "three hundred ninety-seven million, nine hundred seventy thousand, nine hundred eighty".