397536277 has 4 divisors (see below), whose sum is σ = 404274240. Its totient is φ = 390798316.

The previous prime is 397536229. The next prime is 397536283. The reversal of 397536277 is 772635793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397536277 - 2¹¹ = 397534229 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397536277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397536077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368893 + ... + 3369010.

It is an arithmetic number, because the mean of its divisors is an integer number (101068560).

Almost surely, 2^397536277 is an apocalyptic number.

It is an amenable number.

397536277 is a deficient number, since it is larger than the sum of its proper divisors (6737963).

397536277 is an equidigital number, since it uses as much as digits as its factorization.

397536277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6737962.

The product of its digits is 1666980, while the sum is 49.

The square root of 397536277 is about 19938.3117891159. The cubic root of 397536277 is about 735.2904443928.

The spelling of 397536277 in words is "three hundred ninety-seven million, five hundred thirty-six thousand, two hundred seventy-seven".