3953399257 has 4 divisors (see below), whose sum is σ = 3954379216. Its totient is φ = 3952419300.

The previous prime is 3953399239. The next prime is 3953399297. The reversal of 3953399257 is 7529933593.

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 3953399257 - 2²³ = 3945010649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3953399198 and 3953399207.

It is not an unprimeable number, because it can be changed into a prime (3953399207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483903 + ... + 492004.

It is an arithmetic number, because the mean of its divisors is an integer number (988594804).

Almost surely, 2^3953399257 is an apocalyptic number.

It is an amenable number.

3953399257 is a deficient number, since it is larger than the sum of its proper divisors (979959).

3953399257 is an equidigital number, since it uses as much as digits as its factorization.

3953399257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979958.

The product of its digits is 6889050, while the sum is 55.

The square root of 3953399257 is about 62876.0626709402. The cubic root of 3953399257 is about 1581.2124508948.

The spelling of 3953399257 in words is "three billion, nine hundred fifty-three million, three hundred ninety-nine thousand, two hundred fifty-seven".