249098805 has 48 divisors (see below), whose sum is σ = 439735296. Its totient is φ = 130429440.

The previous prime is 249098783. The next prime is 249098827. The reversal of 249098805 is 508890942.

It is an interprime number because it is at equal distance from previous prime (249098783) and next prime (249098827).

It is not a de Polignac number, because 249098805 - 2⁶ = 249098741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1033485 + ... + 1033725.

It is an arithmetic number, because the mean of its divisors is an integer number (9161152).

Almost surely, 2^249098805 is an apocalyptic number.

It is an amenable number.

249098805 is a deficient number, since it is larger than the sum of its proper divisors (190636491).

249098805 is a wasteful number, since it uses less digits than its factorization.

249098805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 249098805 is about 15782.8642837731. The cubic root of 249098805 is about 629.2026572008.

The spelling of 249098805 in words is "two hundred forty-nine million, ninety-eight thousand, eight hundred five".