398286734 has 4 divisors (see below), whose sum is σ = 597430104. Its totient is φ = 199143366.

The previous prime is 398286731. The next prime is 398286739. The reversal of 398286734 is 437682893.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398286731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99571682 + ... + 99571685.

It is an arithmetic number, because the mean of its divisors is an integer number (149357526).

Almost surely, 2^398286734 is an apocalyptic number.

398286734 is a deficient number, since it is larger than the sum of its proper divisors (199143370).

398286734 is a wasteful number, since it uses less digits than its factorization.

398286734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199143369.

The product of its digits is 1741824, while the sum is 50.

The square root of 398286734 is about 19957.1223877592. The cubic root of 398286734 is about 735.7528399278.

The spelling of 398286734 in words is "three hundred ninety-eight million, two hundred eighty-six thousand, seven hundred thirty-four".