868304090 has 16 divisors (see below), whose sum is σ = 1567591272. Its totient is φ = 346289664.

The previous prime is 868304083. The next prime is 868304131. The reversal of 868304090 is 90403868.

It is a Cunningham number, because it is equal to 29467²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 312617761 + 555686329 = 17681^2 + 23573^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125459 + ... + 132198.

Almost surely, 2^868304090 is an apocalyptic number.

868304090 is a deficient number, since it is larger than the sum of its proper divisors (699287182).

868304090 is a wasteful number, since it uses less digits than its factorization.

868304090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258001.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 868304090 is about 29467.0000169681. Note that the first 4 decimals coincide. The cubic root of 868304090 is about 954.0195670677.

The spelling of 868304090 in words is "eight hundred sixty-eight million, three hundred four thousand, ninety".