398051371 has 4 divisors (see below), whose sum is σ = 398127600. Its totient is φ = 397975144.

The previous prime is 398051351. The next prime is 398051389. The reversal of 398051371 is 173150893.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398051371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398051371.

It is not an unprimeable number, because it can be changed into a prime (398051351) 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, 29656 + ... + 40933.

It is an arithmetic number, because the mean of its divisors is an integer number (99531900).

Almost surely, 2^398051371 is an apocalyptic number.

398051371 is a deficient number, since it is larger than the sum of its proper divisors (76229).

398051371 is an equidigital number, since it uses as much as digits as its factorization.

398051371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76228.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 398051371 is about 19951.2247994954. The cubic root of 398051371 is about 735.6078831225.

The spelling of 398051371 in words is "three hundred ninety-eight million, fifty-one thousand, three hundred seventy-one".