398783259 has 12 divisors (see below), whose sum is σ = 658308976. Its totient is φ = 227876112.

The previous prime is 398783251. The next prime is 398783293. The reversal of 398783259 is 952387893.

It is a happy number.

It is not a de Polignac number, because 398783259 - 2³ = 398783251 is a prime.

It is a super-2 number, since 2×398783259² = 318056175317322162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398783251) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3164884 + ... + 3165009.

Almost surely, 2^398783259 is an apocalyptic number.

398783259 is a deficient number, since it is larger than the sum of its proper divisors (259525717).

398783259 is a wasteful number, since it uses less digits than its factorization.

398783259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329906 (or 6329903 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 398783259 is about 19969.5583075841. The cubic root of 398783259 is about 736.0584555759.

The spelling of 398783259 in words is "three hundred ninety-eight million, seven hundred eighty-three thousand, two hundred fifty-nine".