398233455 has 8 divisors (see below), whose sum is σ = 637173552. Its totient is φ = 212391168.

The previous prime is 398233447. The next prime is 398233463. The reversal of 398233455 is 554332893.

It is an interprime number because it is at equal distance from previous prime (398233447) and next prime (398233463).

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

It is not a de Polignac number, because 398233455 - 2³ = 398233447 is a prime.

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, 13274434 + ... + 13274463.

It is an arithmetic number, because the mean of its divisors is an integer number (79646694).

Almost surely, 2^398233455 is an apocalyptic number.

398233455 is a deficient number, since it is larger than the sum of its proper divisors (238940097).

398233455 is a wasteful number, since it uses less digits than its factorization.

398233455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26548905.

The product of its digits is 388800, while the sum is 42.

The square root of 398233455 is about 19955.7875063852. The cubic root of 398233455 is about 735.7200311326.

It can be divided in two parts, 39823345 and 5, that added together give a triangular number (39823350 = T₈₉₂₄).

The spelling of 398233455 in words is "three hundred ninety-eight million, two hundred thirty-three thousand, four hundred fifty-five".