257962949 has 4 divisors (see below), whose sum is σ = 258000864. Its totient is φ = 257925036.

The previous prime is 257962937. The next prime is 257962987. The reversal of 257962949 is 949269752.

257962949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 257962949 - 2²⁴ = 241185733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 257962949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257965949) 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, 5627 + ... + 23400.

It is an arithmetic number, because the mean of its divisors is an integer number (64500216).

Almost surely, 2^257962949 is an apocalyptic number.

It is an amenable number.

257962949 is a deficient number, since it is larger than the sum of its proper divisors (37915).

257962949 is an equidigital number, since it uses as much as digits as its factorization.

257962949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37914.

The product of its digits is 2449440, while the sum is 53.

The square root of 257962949 is about 16061.2250155460. The cubic root of 257962949 is about 636.5792003901.

The spelling of 257962949 in words is "two hundred fifty-seven million, nine hundred sixty-two thousand, nine hundred forty-nine".