899778359 has 4 divisors (see below), whose sum is σ = 901108104. Its totient is φ = 898448616.

The previous prime is 899778353. The next prime is 899778361. The reversal of 899778359 is 953877998.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 899778359 - 2¹⁶ = 899712823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 899778295 and 899778304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899778353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663857 + ... + 665210.

It is an arithmetic number, because the mean of its divisors is an integer number (225277026).

Almost surely, 2^899778359 is an apocalyptic number.

899778359 is a deficient number, since it is larger than the sum of its proper divisors (1329745).

899778359 is a wasteful number, since it uses less digits than its factorization.

899778359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329744.

The product of its digits is 34292160, while the sum is 65.

The square root of 899778359 is about 29996.3057558760. The cubic root of 899778359 is about 965.4101217902.

The spelling of 899778359 in words is "eight hundred ninety-nine million, seven hundred seventy-eight thousand, three hundred fifty-nine".