390898842 has 16 divisors (see below), whose sum is σ = 782207712. Its totient is φ = 130231280.

The previous prime is 390898841. The next prime is 390898847. The reversal of 390898842 is 248898093.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (390898841) 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, 3909 + ... + 28232.

It is an arithmetic number, because the mean of its divisors is an integer number (48887982).

Almost surely, 2^390898842 is an apocalyptic number.

390898842 is an abundant number, since it is smaller than the sum of its proper divisors (391308870).

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

390898842 is a wasteful number, since it uses less digits than its factorization.

390898842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34173.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 390898842 is about 19771.1618778462. The cubic root of 390898842 is about 731.1752146764.

The spelling of 390898842 in words is "three hundred ninety million, eight hundred ninety-eight thousand, eight hundred forty-two".