249023417 has 4 divisors (see below), whose sum is σ = 249288996. Its totient is φ = 248757840.

The previous prime is 249023387. The next prime is 249023473. The reversal of 249023417 is 714320942.

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

It can be written as a sum of positive squares in 2 ways, for example, as 215972416 + 33051001 = 14696^2 + 5749^2 .

It is a cyclic number.

It is not a de Polignac number, because 249023417 - 2⁶ = 249023353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249023717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131378 + ... + 133259.

It is an arithmetic number, because the mean of its divisors is an integer number (62322249).

Almost surely, 2^249023417 is an apocalyptic number.

It is an amenable number.

249023417 is a deficient number, since it is larger than the sum of its proper divisors (265579).

249023417 is an equidigital number, since it uses as much as digits as its factorization.

249023417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265578.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 249023417 is about 15780.4758166539. The cubic root of 249023417 is about 629.1391762112.

The spelling of 249023417 in words is "two hundred forty-nine million, twenty-three thousand, four hundred seventeen".