253876391 has 4 divisors (see below), whose sum is σ = 262065984. Its totient is φ = 245686800.

The previous prime is 253876361. The next prime is 253876393. The reversal of 253876391 is 193678352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253876391 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 (253876393) 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, 4094750 + ... + 4094811.

It is an arithmetic number, because the mean of its divisors is an integer number (65516496).

Almost surely, 2^253876391 is an apocalyptic number.

253876391 is a deficient number, since it is larger than the sum of its proper divisors (8189593).

253876391 is an equidigital number, since it uses as much as digits as its factorization.

253876391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8189592.

The product of its digits is 272160, while the sum is 44.

The square root of 253876391 is about 15933.4990193617. The cubic root of 253876391 is about 633.1998043209.

The spelling of 253876391 in words is "two hundred fifty-three million, eight hundred seventy-six thousand, three hundred ninety-one".