608991399 has 16 divisors (see below), whose sum is σ = 926595040. Its totient is φ = 395020800.

The previous prime is 608991371. The next prime is 608991407. The reversal of 608991399 is 993199806.

It is not a de Polignac number, because 608991399 - 2¹² = 608987303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (608991319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303802 + ... + 305799.

It is an arithmetic number, because the mean of its divisors is an integer number (57912190).

Almost surely, 2^608991399 is an apocalyptic number.

608991399 is a deficient number, since it is larger than the sum of its proper divisors (317603641).

608991399 is a wasteful number, since it uses less digits than its factorization.

608991399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609647 (or 609641 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 608991399 is about 24677.7510928366. The cubic root of 608991399 is about 847.6249263724.

The spelling of 608991399 in words is "six hundred eight million, nine hundred ninety-one thousand, three hundred ninety-nine".