398374699 has 4 divisors (see below), whose sum is σ = 398732464. Its totient is φ = 398016936.

The previous prime is 398374663. The next prime is 398374723. The reversal of 398374699 is 996473893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996473893 = 1321 ⋅754333.

It is a cyclic number.

It is not a de Polignac number, because 398374699 - 2¹⁷ = 398243627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398374499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177207 + ... + 179440.

It is an arithmetic number, because the mean of its divisors is an integer number (99683116).

Almost surely, 2^398374699 is an apocalyptic number.

398374699 is a deficient number, since it is larger than the sum of its proper divisors (357765).

398374699 is a wasteful number, since it uses less digits than its factorization.

398374699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357764.

The product of its digits is 8817984, while the sum is 58.

The square root of 398374699 is about 19959.3261158788. The cubic root of 398374699 is about 735.8070016903.

It can be divided in two parts, 39 and 8374699, that added together give a palindrome (8374738).

The spelling of 398374699 in words is "three hundred ninety-eight million, three hundred seventy-four thousand, six hundred ninety-nine".