397060365981 has 16 divisors (see below), whose sum is σ = 557307771840. Its totient is φ = 250761438720.

The previous prime is 397060365967. The next prime is 397060365997. The reversal of 397060365981 is 189563060793.

It is a happy number.

It is not a de Polignac number, because 397060365981 - 2¹⁸ = 397060103837 is a prime.

It is a super-2 number, since 2×397060365981² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397060365781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936391 + ... + 1292651.

It is an arithmetic number, because the mean of its divisors is an integer number (34831735740).

Almost surely, 2^397060365981 is an apocalyptic number.

It is an amenable number.

397060365981 is a deficient number, since it is larger than the sum of its proper divisors (160247405859).

397060365981 is a wasteful number, since it uses less digits than its factorization.

397060365981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375836.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 397060365981 in words is "three hundred ninety-seven billion, sixty million, three hundred sixty-five thousand, nine hundred eighty-one".