398423277 has 48 divisors (see below), whose sum is σ = 675717120. Its totient is φ = 221499936.

The previous prime is 398423239. The next prime is 398423279. The reversal of 398423277 is 772324893.

It is not a de Polignac number, because 398423277 - 2⁶ = 398423213 is a prime.

It is a super-2 number, since 2×398423277² = 317482215310837458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398423279) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 707398 + ... + 707960.

It is an arithmetic number, because the mean of its divisors is an integer number (14077440).

Almost surely, 2^398423277 is an apocalyptic number.

It is an amenable number.

398423277 is a deficient number, since it is larger than the sum of its proper divisors (277293843).

398423277 is a wasteful number, since it uses less digits than its factorization.

398423277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 859 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 398423277 is about 19960.5430036359. The cubic root of 398423277 is about 735.8369086931.

It can be divided in two parts, 3984 and 23277, that added together give a triangular number (27261 = T₂₃₃).

The spelling of 398423277 in words is "three hundred ninety-eight million, four hundred twenty-three thousand, two hundred seventy-seven".