249780394 has 8 divisors (see below), whose sum is σ = 381021120. Its totient is φ = 122773356.

The previous prime is 249780389. The next prime is 249780413. The reversal of 249780394 is 493087942.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058274 + ... + 1058509.

It is an arithmetic number, because the mean of its divisors is an integer number (47627640).

Almost surely, 2^249780394 is an apocalyptic number.

249780394 is a deficient number, since it is larger than the sum of its proper divisors (131240726).

249780394 is a wasteful number, since it uses less digits than its factorization.

249780394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116844.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 249780394 is about 15804.4422236281. The cubic root of 249780394 is about 629.7760134290.

The spelling of 249780394 in words is "two hundred forty-nine million, seven hundred eighty thousand, three hundred ninety-four".