398102494 has 8 divisors (see below), whose sum is σ = 597620880. Its totient is φ = 198895536.

The previous prime is 398102491. The next prime is 398102501. The reversal of 398102494 is 494201893.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398102491) 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, 74634 + ... + 79789.

It is an arithmetic number, because the mean of its divisors is an integer number (74702610).

Almost surely, 2^398102494 is an apocalyptic number.

398102494 is a deficient number, since it is larger than the sum of its proper divisors (199518386).

398102494 is a wasteful number, since it uses less digits than its factorization.

398102494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155714.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 398102494 is about 19952.5059578991. The cubic root of 398102494 is about 735.6393739256.

The spelling of 398102494 in words is "three hundred ninety-eight million, one hundred two thousand, four hundred ninety-four".