249499421 has 8 divisors (see below), whose sum is σ = 250962624. Its totient is φ = 248040640.

The previous prime is 249499417. The next prime is 249499433. The reversal of 249499421 is 124994942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249499421 - 2² = 249499417 is a prime.

It is a super-2 number, since 2×249499421² = 124499922158670482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249499451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254885 + ... + 255861.

It is an arithmetic number, because the mean of its divisors is an integer number (31370328).

Almost surely, 2^249499421 is an apocalyptic number.

It is an amenable number.

249499421 is a deficient number, since it is larger than the sum of its proper divisors (1463203).

249499421 is an equidigital number, since it uses as much as digits as its factorization.

249499421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211.

The product of its digits is 186624, while the sum is 44.

The square root of 249499421 is about 15795.5506709959. The cubic root of 249499421 is about 629.5397839908.

The spelling of 249499421 in words is "two hundred forty-nine million, four hundred ninety-nine thousand, four hundred twenty-one".