7902198404 has 6 divisors (see below), whose sum is σ = 13828847214. Its totient is φ = 3951099200.

The previous prime is 7902198323. The next prime is 7902198433. The reversal of 7902198404 is 4048912097.

It can be written as a sum of positive squares in only one way, i.e., 6731874304 + 1170324100 = 82048^2 + 34210^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987774797 + ... + 987774804.

It is an arithmetic number, because the mean of its divisors is an integer number (2304807869).

Almost surely, 2^7902198404 is an apocalyptic number.

It is an amenable number.

7902198404 is a deficient number, since it is larger than the sum of its proper divisors (5926648810).

7902198404 is a wasteful number, since it uses less digits than its factorization.

7902198404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975549605 (or 1975549603 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 7902198404 is about 88894.3103016160. The cubic root of 7902198404 is about 1991.8164272402.

The spelling of 7902198404 in words is "seven billion, nine hundred two million, one hundred ninety-eight thousand, four hundred four".