398102051 has 4 divisors (see below), whose sum is σ = 401625192. Its totient is φ = 394578912.

The previous prime is 398102021. The next prime is 398102059. The reversal of 398102051 is 150201893.

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-398102051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398102059) 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, 1761401 + ... + 1761626.

It is an arithmetic number, because the mean of its divisors is an integer number (100406298).

Almost surely, 2^398102051 is an apocalyptic number.

398102051 is a deficient number, since it is larger than the sum of its proper divisors (3523141).

398102051 is a wasteful number, since it uses less digits than its factorization.

398102051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523140.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 398102051 is about 19952.4948565336. The cubic root of 398102051 is about 735.6391010575.

The spelling of 398102051 in words is "three hundred ninety-eight million, one hundred two thousand, fifty-one".