253964329 has 4 divisors (see below), whose sum is σ = 255903120. Its totient is φ = 252025540.

The previous prime is 253964303. The next prime is 253964341. The reversal of 253964329 is 923469352.

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 253964329 - 2⁷ = 253964201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253964129) 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, 969199 + ... + 969460.

It is an arithmetic number, because the mean of its divisors is an integer number (63975780).

Almost surely, 2^253964329 is an apocalyptic number.

It is an amenable number.

253964329 is a deficient number, since it is larger than the sum of its proper divisors (1938791).

253964329 is a wasteful number, since it uses less digits than its factorization.

253964329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938790.

The product of its digits is 349920, while the sum is 43.

The square root of 253964329 is about 15936.2583124145. The cubic root of 253964329 is about 633.2729053765.

The spelling of 253964329 in words is "two hundred fifty-three million, nine hundred sixty-four thousand, three hundred twenty-nine".