249749450 has 48 divisors (see below), whose sum is σ = 492390360. Its totient is φ = 94080000.

The previous prime is 249749441. The next prime is 249749453. The reversal of 249749450 is 54947942.

It can be written as a sum of positive squares in 12 ways, for example, as 20620681 + 229128769 = 4541^2 + 15137^2 .

It is not an unprimeable number, because it can be changed into a prime (249749453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57350 + ... + 61550.

Almost surely, 2^249749450 is an apocalyptic number.

249749450 is a deficient number, since it is larger than the sum of its proper divisors (242640910).

249749450 is a wasteful number, since it uses less digits than its factorization.

249749450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283 (or 4278 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 249749450 is about 15803.4632280396. The cubic root of 249749450 is about 629.7500057916.

The spelling of 249749450 in words is "two hundred forty-nine million, seven hundred forty-nine thousand, four hundred fifty".