253704999 has 4 divisors (see below), whose sum is σ = 338273336. Its totient is φ = 169136664.

The previous prime is 253704977. The next prime is 253705009. The reversal of 253704999 is 999407352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253704999 - 2⁹ = 253704487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253700999) 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, 42284164 + ... + 42284169.

It is an arithmetic number, because the mean of its divisors is an integer number (84568334).

Almost surely, 2^253704999 is an apocalyptic number.

253704999 is a deficient number, since it is larger than the sum of its proper divisors (84568337).

253704999 is an equidigital number, since it uses as much as digits as its factorization.

253704999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84568336.

The product of its (nonzero) digits is 612360, while the sum is 48.

The square root of 253704999 is about 15928.1197572093. The cubic root of 253704999 is about 633.0572811407.

The spelling of 253704999 in words is "two hundred fifty-three million, seven hundred four thousand, nine hundred ninety-nine".