249494615 has 4 divisors (see below), whose sum is σ = 299393544. Its totient is φ = 199595688.

The previous prime is 249494591. The next prime is 249494617. The reversal of 249494615 is 516494942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249494615 - 2⁸ = 249494359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249494617) 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, 24949457 + ... + 24949466.

It is an arithmetic number, because the mean of its divisors is an integer number (74848386).

Almost surely, 2^249494615 is an apocalyptic number.

249494615 is a deficient number, since it is larger than the sum of its proper divisors (49898929).

249494615 is an equidigital number, since it uses as much as digits as its factorization.

249494615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49898928.

The product of its digits is 311040, while the sum is 44.

The square root of 249494615 is about 15795.3985388150. The cubic root of 249494615 is about 629.5357417801.

The spelling of 249494615 in words is "two hundred forty-nine million, four hundred ninety-four thousand, six hundred fifteen".