260399998 has 8 divisors (see below), whose sum is σ = 392996808. Its totient is φ = 129401064.

The previous prime is 260399983. The next prime is 260400013. The reversal of 260399998 is 899993062.

It is an interprime number because it is at equal distance from previous prime (260399983) and next prime (260400013).

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

It is a super-3 number, since 3×260399998³ (a number of 26 digits) contains 333 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399061 + ... + 399712.

It is an arithmetic number, because the mean of its divisors is an integer number (49124601).

Almost surely, 2^260399998 is an apocalyptic number.

260399998 is a deficient number, since it is larger than the sum of its proper divisors (132596810).

260399998 is a wasteful number, since it uses less digits than its factorization.

260399998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798938.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The square root of 260399998 is about 16136.9141411857. The cubic root of 260399998 is about 638.5775684570.

The spelling of 260399998 in words is "two hundred sixty million, three hundred ninety-nine thousand, nine hundred ninety-eight".