249772377 has 4 divisors (see below), whose sum is σ = 333029840. Its totient is φ = 166514916.

The previous prime is 249772373. The next prime is 249772403. The reversal of 249772377 is 773277942.

It is a happy number.

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 249772377 - 2² = 249772373 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249772373) 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, 41628727 + ... + 41628732.

It is an arithmetic number, because the mean of its divisors is an integer number (83257460).

Almost surely, 2^249772377 is an apocalyptic number.

It is an amenable number.

249772377 is a deficient number, since it is larger than the sum of its proper divisors (83257463).

249772377 is an equidigital number, since it uses as much as digits as its factorization.

249772377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83257462.

The product of its digits is 1037232, while the sum is 48.

The square root of 249772377 is about 15804.1885903706. The cubic root of 249772377 is about 629.7692755526.

Adding to 249772377 its sum of digits (48), we get a triangular number (249772425 = T₂₂₃₅₀).

The spelling of 249772377 in words is "two hundred forty-nine million, seven hundred seventy-two thousand, three hundred seventy-seven".