249042477 has 4 divisors (see below), whose sum is σ = 332056640. Its totient is φ = 166028316.

The previous prime is 249042473. The next prime is 249042527. The reversal of 249042477 is 774240942.

249042477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 249042477 - 2² = 249042473 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 (249042473) 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, 41507077 + ... + 41507082.

It is an arithmetic number, because the mean of its divisors is an integer number (83014160).

Almost surely, 2^249042477 is an apocalyptic number.

It is an amenable number.

249042477 is a deficient number, since it is larger than the sum of its proper divisors (83014163).

249042477 is an equidigital number, since it uses as much as digits as its factorization.

249042477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83014162.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 249042477 is about 15781.0797159130. The cubic root of 249042477 is about 629.1552270267.

The spelling of 249042477 in words is "two hundred forty-nine million, forty-two thousand, four hundred seventy-seven".