398299277 has 8 divisors (see below), whose sum is σ = 404019840. Its totient is φ = 392595840.

The previous prime is 398299271. The next prime is 398299283. The reversal of 398299277 is 772992893.

It is an interprime number because it is at equal distance from previous prime (398299271) and next prime (398299283).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398299277 - 2¹² = 398295181 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 (398299271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46877 + ... + 54717.

It is an arithmetic number, because the mean of its divisors is an integer number (50502480).

Almost surely, 2^398299277 is an apocalyptic number.

It is an amenable number.

398299277 is a deficient number, since it is larger than the sum of its proper divisors (5720563).

398299277 is an equidigital number, since it uses as much as digits as its factorization.

398299277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8563.

The product of its digits is 3429216, while the sum is 56.

The square root of 398299277 is about 19957.4366339969. The cubic root of 398299277 is about 735.7605633845.

The spelling of 398299277 in words is "three hundred ninety-eight million, two hundred ninety-nine thousand, two hundred seventy-seven".