247438998 has 24 divisors (see below), whose sum is σ = 541132488. Its totient is φ = 81708192.

The previous prime is 247438987. The next prime is 247439009. The reversal of 247438998 is 899834742.

247438998 is a `hidden beast` number, since 2 + 474 + 3 + 89 + 98 = 666.

It is an interprime number because it is at equal distance from previous prime (247438987) and next prime (247439009).

It is a super-2 number, since 2×247438998² = 122452115462488008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62311 + ... + 66162.

It is an arithmetic number, because the mean of its divisors is an integer number (22547187).

Almost surely, 2^247438998 is an apocalyptic number.

247438998 is an abundant number, since it is smaller than the sum of its proper divisors (293693490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247438998 is a wasteful number, since it uses less digits than its factorization.

247438998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128588 (or 128585 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 247438998 is about 15730.1938322450. The cubic root of 247438998 is about 627.8020306523.

The spelling of 247438998 in words is "two hundred forty-seven million, four hundred thirty-eight thousand, nine hundred ninety-eight".