397678384 has 40 divisors (see below), whose sum is σ = 785762208. Its totient is φ = 194933760.

The previous prime is 397678381. The next prime is 397678409. The reversal of 397678384 is 483876793.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (397678381) 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, 222904 + ... + 224680.

Almost surely, 2^397678384 is an apocalyptic number.

It is an amenable number.

397678384 is a deficient number, since it is larger than the sum of its proper divisors (388083824).

397678384 is a wasteful number, since it uses less digits than its factorization.

397678384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2047 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 55.

The square root of 397678384 is about 19941.8751375090. The cubic root of 397678384 is about 735.3780485328.

The spelling of 397678384 in words is "three hundred ninety-seven million, six hundred seventy-eight thousand, three hundred eighty-four".