398296742 has 8 divisors (see below), whose sum is σ = 616717632. Its totient is φ = 192724200.

The previous prime is 398296741. The next prime is 398296751. The reversal of 398296742 is 247692893.

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 (398296741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3212009 + ... + 3212132.

It is an arithmetic number, because the mean of its divisors is an integer number (77089704).

Almost surely, 2^398296742 is an apocalyptic number.

398296742 is a deficient number, since it is larger than the sum of its proper divisors (218420890).

398296742 is a wasteful number, since it uses less digits than its factorization.

398296742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424174.

The product of its digits is 1306368, while the sum is 50.

The square root of 398296742 is about 19957.3731237355. The cubic root of 398296742 is about 735.7590024502.

The spelling of 398296742 in words is "three hundred ninety-eight million, two hundred ninety-six thousand, seven hundred forty-two".