253900093 has 4 divisors (see below), whose sum is σ = 253955520. Its totient is φ = 253844668.

The previous prime is 253900091. The next prime is 253900109. The reversal of 253900093 is 390009352.

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 253900093 - 2¹ = 253900091 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 (253900091) 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, 20155 + ... + 30232.

It is an arithmetic number, because the mean of its divisors is an integer number (63488880).

Almost surely, 2^253900093 is an apocalyptic number.

253900093 is the 10078-th heptagonal number.

It is an amenable number.

253900093 is a deficient number, since it is larger than the sum of its proper divisors (55427).

253900093 is an equidigital number, since it uses as much as digits as its factorization.

253900093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55426.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 253900093 is about 15934.2427808792. The cubic root of 253900093 is about 633.2195089688.

The spelling of 253900093 in words is "two hundred fifty-three million, nine hundred thousand, ninety-three".