398404419 has 16 divisors (see below), whose sum is σ = 623501568. Its totient is φ = 221506272.

The previous prime is 398404411. The next prime is 398404423. The reversal of 398404419 is 914404893.

It is not a de Polignac number, because 398404419 - 2³ = 398404411 is a prime.

It is a super-2 number, since 2×398404419² = 317452162157455122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398404411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255597 + ... + 257150.

It is an arithmetic number, because the mean of its divisors is an integer number (38968848).

Almost surely, 2^398404419 is an apocalyptic number.

398404419 is a deficient number, since it is larger than the sum of its proper divisors (225097149).

398404419 is a wasteful number, since it uses less digits than its factorization.

398404419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512794.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 398404419 is about 19960.0706161075. The cubic root of 398404419 is about 735.8252990707.

The spelling of 398404419 in words is "three hundred ninety-eight million, four hundred four thousand, four hundred nineteen".