249548997 has 4 divisors (see below), whose sum is σ = 332732000. Its totient is φ = 166365996.

The previous prime is 249548989. The next prime is 249549017. The reversal of 249548997 is 799845942.

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 not a de Polignac number, because 249548997 - 2³ = 249548989 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 (249548917) 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, 41591497 + ... + 41591502.

It is an arithmetic number, because the mean of its divisors is an integer number (83183000).

Almost surely, 2^249548997 is an apocalyptic number.

It is an amenable number.

249548997 is a deficient number, since it is larger than the sum of its proper divisors (83183003).

249548997 is an equidigital number, since it uses as much as digits as its factorization.

249548997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83183002.

The product of its digits is 6531840, while the sum is 57.

The square root of 249548997 is about 15797.1198957278. The cubic root of 249548997 is about 629.5814781388.

The spelling of 249548997 in words is "two hundred forty-nine million, five hundred forty-eight thousand, nine hundred ninety-seven".