398932449 has 4 divisors (see below), whose sum is σ = 531909936. Its totient is φ = 265954964.

The previous prime is 398932441. The next prime is 398932463. The reversal of 398932449 is 944239893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 398932449 - 2³ = 398932441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398932441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66488739 + ... + 66488744.

It is an arithmetic number, because the mean of its divisors is an integer number (132977484).

Almost surely, 2^398932449 is an apocalyptic number.

It is an amenable number.

398932449 is a deficient number, since it is larger than the sum of its proper divisors (132977487).

398932449 is a wasteful number, since it uses less digits than its factorization.

398932449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132977486.

The product of its digits is 1679616, while the sum is 51.

The square root of 398932449 is about 19973.2933939298. The cubic root of 398932449 is about 736.1502338099.

The spelling of 398932449 in words is "three hundred ninety-eight million, nine hundred thirty-two thousand, four hundred forty-nine".