398944277 has 4 divisors (see below), whose sum is σ = 398995116. Its totient is φ = 398893440.

The previous prime is 398944229. The next prime is 398944279. The reversal of 398944277 is 772449893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130279396 + 268664881 = 11414^2 + 16391^2 .

It is a cyclic number.

It is not a de Polignac number, because 398944277 - 2²⁴ = 382167061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398944279) 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, 10874 + ... + 30267.

It is an arithmetic number, because the mean of its divisors is an integer number (99748779).

Almost surely, 2^398944277 is an apocalyptic number.

It is an amenable number.

398944277 is a deficient number, since it is larger than the sum of its proper divisors (50839).

398944277 is an equidigital number, since it uses as much as digits as its factorization.

398944277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50838.

The product of its digits is 3048192, while the sum is 53.

The square root of 398944277 is about 19973.5894871202. The cubic root of 398944277 is about 736.1575091426.

The spelling of 398944277 in words is "three hundred ninety-eight million, nine hundred forty-four thousand, two hundred seventy-seven".