699408799 has 2 divisors, whose sum is σ = 699408800. Its totient is φ = 699408798.

The previous prime is 699408761. The next prime is 699408811. The reversal of 699408799 is 997804996.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 699408799 - 2¹³ = 699400607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699408499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349704399 + 349704400.

It is an arithmetic number, because the mean of its divisors is an integer number (349704400).

Almost surely, 2^699408799 is an apocalyptic number.

699408799 is a deficient number, since it is larger than the sum of its proper divisors (1).

699408799 is an equidigital number, since it uses as much as digits as its factorization.

699408799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The square root of 699408799 is about 26446.3381018999. The cubic root of 699408799 is about 887.6539647980.

The spelling of 699408799 in words is "six hundred ninety-nine million, four hundred eight thousand, seven hundred ninety-nine".