249678098 has 8 divisors (see below), whose sum is σ = 376682508. Its totient is φ = 124117264.

The previous prime is 249678089. The next prime is 249678101. The reversal of 249678098 is 890876942.

It can be written as a sum of positive squares in 2 ways, for example, as 247653169 + 2024929 = 15737^2 + 1423^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360461 + ... + 361152.

Almost surely, 2^249678098 is an apocalyptic number.

249678098 is a deficient number, since it is larger than the sum of its proper divisors (127004410).

249678098 is a wasteful number, since it uses less digits than its factorization.

249678098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721788.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 249678098 is about 15801.2055869165. The cubic root of 249678098 is about 629.6900280790.

The spelling of 249678098 in words is "two hundred forty-nine million, six hundred seventy-eight thousand, ninety-eight".