249261377 has 4 divisors (see below), whose sum is σ = 249301440. Its totient is φ = 249221316.

The previous prime is 249261329. The next prime is 249261391. The reversal of 249261377 is 773162942.

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 not a de Polignac number, because 249261377 - 2⁸ = 249261121 is a prime.

It is a super-2 number, since 2×249261377² = 124262468127872258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249261577) 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, 8477 + ... + 23882.

It is an arithmetic number, because the mean of its divisors is an integer number (62325360).

Almost surely, 2^249261377 is an apocalyptic number.

It is an amenable number.

249261377 is a deficient number, since it is larger than the sum of its proper divisors (40063).

249261377 is an equidigital number, since it uses as much as digits as its factorization.

249261377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40062.

The product of its digits is 127008, while the sum is 41.

The square root of 249261377 is about 15788.0137129406. The cubic root of 249261377 is about 629.3395085055.

The spelling of 249261377 in words is "two hundred forty-nine million, two hundred sixty-one thousand, three hundred seventy-seven".