397413377 has 2 divisors, whose sum is σ = 397413378. Its totient is φ = 397413376.

The previous prime is 397413347. The next prime is 397413383. The reversal of 397413377 is 773314793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 393665281 + 3748096 = 19841^2 + 1936^2 .

It is an emirp because it is prime and its reverse (773314793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397413377 - 2¹² = 397409281 is a prime.

It is not a weakly prime, because it can be changed into another prime (397413347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198706688 + 198706689.

It is an arithmetic number, because the mean of its divisors is an integer number (198706689).

Almost surely, 2^397413377 is an apocalyptic number.

It is an amenable number.

397413377 is a deficient number, since it is larger than the sum of its proper divisors (1).

397413377 is an equidigital number, since it uses as much as digits as its factorization.

397413377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 44.

The square root of 397413377 is about 19935.2295447030. The cubic root of 397413377 is about 735.2146638792.

The spelling of 397413377 in words is "three hundred ninety-seven million, four hundred thirteen thousand, three hundred seventy-seven".