398308895 has 8 divisors (see below), whose sum is σ = 506086704. Its totient is φ = 299903104.

The previous prime is 398308877. The next prime is 398308907. The reversal of 398308895 is 598803893.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 398308895 - 2⁸ = 398308639 is a prime.

It is a super-2 number, since 2×398308895² = 317299951672242050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2342909 + ... + 2343078.

It is an arithmetic number, because the mean of its divisors is an integer number (63260838).

Almost surely, 2^398308895 is an apocalyptic number.

398308895 is a deficient number, since it is larger than the sum of its proper divisors (107777809).

398308895 is a wasteful number, since it uses less digits than its factorization.

398308895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4686009.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 398308895 is about 19957.6775953516. The cubic root of 398308895 is about 735.7664856382.

The spelling of 398308895 in words is "three hundred ninety-eight million, three hundred eight thousand, eight hundred ninety-five".