256498093 has 4 divisors (see below), whose sum is σ = 267650208. Its totient is φ = 245345980.

The previous prime is 256498087. The next prime is 256498103. The reversal of 256498093 is 390894652.

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 a de Polignac number, because none of the positive numbers 2^k-256498093 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 (256499093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5576023 + ... + 5576068.

It is an arithmetic number, because the mean of its divisors is an integer number (66912552).

Almost surely, 2^256498093 is an apocalyptic number.

256498093 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

256498093 is a deficient number, since it is larger than the sum of its proper divisors (11152115).

256498093 is a wasteful number, since it uses less digits than its factorization.

256498093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11152114.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 256498093 is about 16015.5578422982. The cubic root of 256498093 is about 635.3719630309.

The spelling of 256498093 in words is "two hundred fifty-six million, four hundred ninety-eight thousand, ninety-three".