390121192 has 48 divisors (see below), whose sum is σ = 759780000. Its totient is φ = 187780032.

The previous prime is 390121189. The next prime is 390121201. The reversal of 390121192 is 291121093.

It is a self number, because there is not a number n which added to its sum of digits gives 390121192.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1960309 + ... + 1960507.

It is an arithmetic number, because the mean of its divisors is an integer number (15828750).

Almost surely, 2^390121192 is an apocalyptic number.

It is an amenable number.

390121192 is a deficient number, since it is larger than the sum of its proper divisors (369658808).

390121192 is a wasteful number, since it uses less digits than its factorization.

390121192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 390121192 is about 19751.4858175278. The cubic root of 390121192 is about 730.6900287269.

Subtracting from 390121192 its reverse (291121093), we obtain a palindrome (99000099).

It can be divided in two parts, 39012 and 1192, that added together give a palindrome (40204).

The spelling of 390121192 in words is "three hundred ninety million, one hundred twenty-one thousand, one hundred ninety-two".