397053047389 has 16 divisors (see below), whose sum is σ = 410938569216. Its totient is φ = 383236128000.

The previous prime is 397053047341. The next prime is 397053047437. The reversal of 397053047389 is 983740350793.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (397053047341) and next prime (397053047437).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397053047389 is a prime.

It is a super-2 number, since 2×397053047389² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397053047329) 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, 20428494 + ... + 20447920.

It is an arithmetic number, because the mean of its divisors is an integer number (25683660576).

Almost surely, 2^397053047389 is an apocalyptic number.

It is an amenable number.

397053047389 is a deficient number, since it is larger than the sum of its proper divisors (13885521827).

397053047389 is a wasteful number, since it uses less digits than its factorization.

397053047389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21156.

The product of its (nonzero) digits is 17146080, while the sum is 58.

The spelling of 397053047389 in words is "three hundred ninety-seven billion, fifty-three million, forty-seven thousand, three hundred eighty-nine".