398612274 has 16 divisors (see below), whose sum is σ = 800169600. Its totient is φ = 132379920.

The previous prime is 398612273. The next prime is 398612293. The reversal of 398612274 is 472216893.

It is not an unprimeable number, because it can be changed into a prime (398612273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120949 + ... + 124200.

It is an arithmetic number, because the mean of its divisors is an integer number (50010600).

Almost surely, 2^398612274 is an apocalyptic number.

398612274 is an abundant number, since it is smaller than the sum of its proper divisors (401557326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398612274 is a wasteful number, since it uses less digits than its factorization.

398612274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245425.

The product of its digits is 145152, while the sum is 42.

The square root of 398612274 is about 19965.2767073236. The cubic root of 398612274 is about 735.9532414076.

The spelling of 398612274 in words is "three hundred ninety-eight million, six hundred twelve thousand, two hundred seventy-four".