249078890 has 8 divisors (see below), whose sum is σ = 448342020. Its totient is φ = 99631552.

The previous prime is 249078889. The next prime is 249078901. The reversal of 249078890 is 98870942.

249078890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 237375649 + 11703241 = 15407^2 + 3421^2 .

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, 12453935 + ... + 12453954.

Almost surely, 2^249078890 is an apocalyptic number.

249078890 is a deficient number, since it is larger than the sum of its proper divisors (199263130).

249078890 is a wasteful number, since it uses less digits than its factorization.

249078890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24907896.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 249078890 is about 15782.2333654017. The cubic root of 249078890 is about 629.1858888815.

The spelling of 249078890 in words is "two hundred forty-nine million, seventy-eight thousand, eight hundred ninety".