397227019840 has 112 divisors (see below), whose sum is σ = 1104025784832. Its totient is φ = 133294381056.

The previous prime is 397227019829. The next prime is 397227019877. The reversal of 397227019840 is 48910722793.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1781247 + ... + 1991806.

Almost surely, 2^397227019840 is an apocalyptic number.

It is an amenable number.

397227019840 is an abundant number, since it is smaller than the sum of its proper divisors (706798764992).

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

397227019840 is a wasteful number, since it uses less digits than its factorization.

397227019840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773124 (or 3773114 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 397227019840 in words is "three hundred ninety-seven billion, two hundred twenty-seven million, nineteen thousand, eight hundred forty".