785199407949 has 12 divisors (see below), whose sum is σ = 1237283915712. Its totient is φ = 475878429000.

The previous prime is 785199407917. The next prime is 785199407959. The reversal of 785199407949 is 949704991587.

It is not a de Polignac number, because 785199407949 - 2⁵ = 785199407917 is a prime.

It is a super-2 number, since 2×785199407949² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785199407959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3965653477 + ... + 3965653674.

It is an arithmetic number, because the mean of its divisors is an integer number (103106992976).

Almost surely, 2^785199407949 is an apocalyptic number.

It is an amenable number.

785199407949 is a deficient number, since it is larger than the sum of its proper divisors (452084507763).

785199407949 is a wasteful number, since it uses less digits than its factorization.

785199407949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7931307168 (or 7931307165 counting only the distinct ones).

The product of its (nonzero) digits is 205752960, while the sum is 72.

The spelling of 785199407949 in words is "seven hundred eighty-five billion, one hundred ninety-nine million, four hundred seven thousand, nine hundred forty-nine".