395771089 has 6 divisors (see below), whose sum is σ = 460386834. Its totient is φ = 339232320.

The previous prime is 395771071. The next prime is 395771099. The reversal of 395771089 is 980177593.

It can be written as a sum of positive squares in only one way, i.e., 375700689 + 20070400 = 19383^2 + 4480^2 .

It is not a de Polignac number, because 395771089 - 2²⁷ = 261553361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 8076961 = 395771089 / (3 + 9 + 5 + 7 + 7 + 1 + 0 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395771039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4038432 + ... + 4038529.

It is an arithmetic number, because the mean of its divisors is an integer number (76731139).

Almost surely, 2^395771089 is an apocalyptic number.

It is an amenable number.

395771089 is a deficient number, since it is larger than the sum of its proper divisors (64615745).

395771089 is an equidigital number, since it uses as much as digits as its factorization.

395771089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8076975 (or 8076968 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 49.

The square root of 395771089 is about 19893.9963054184. The cubic root of 395771089 is about 734.2005214804.

The spelling of 395771089 in words is "three hundred ninety-five million, seven hundred seventy-one thousand, eighty-nine".