605440899 has 20 divisors (see below), whose sum is σ = 1033628464. Its totient is φ = 345965904.

The previous prime is 605440883. The next prime is 605440931. The reversal of 605440899 is 998044506.

It is a happy number.

It is not a de Polignac number, because 605440899 - 2⁴ = 605440883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605445899) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 533332 + ... + 534465.

Almost surely, 2^605440899 is an apocalyptic number.

605440899 is a deficient number, since it is larger than the sum of its proper divisors (428187565).

605440899 is a wasteful number, since it uses less digits than its factorization.

605440899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067816 (or 1067807 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 605440899 is about 24605.7086668927. The cubic root of 605440899 is about 845.9744597692.

The spelling of 605440899 in words is "six hundred five million, four hundred forty thousand, eight hundred ninety-nine".