249990514 has 4 divisors (see below), whose sum is σ = 374985774. Its totient is φ = 124995256.

The previous prime is 249990511. The next prime is 249990539. The reversal of 249990514 is 415099942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 415099942 = 2 ⋅207549971.

It can be written as a sum of positive squares in only one way, i.e., 205434889 + 44555625 = 14333^2 + 6675^2 .

It is not an unprimeable number, because it can be changed into a prime (249990511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62497627 + ... + 62497630.

Almost surely, 2^249990514 is an apocalyptic number.

249990514 is a deficient number, since it is larger than the sum of its proper divisors (124995260).

249990514 is a wasteful number, since it uses less digits than its factorization.

249990514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124995259.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 249990514 is about 15811.0883243374. The cubic root of 249990514 is about 629.9525571059.

The spelling of 249990514 in words is "two hundred forty-nine million, nine hundred ninety thousand, five hundred fourteen".