3999135740 has 12 divisors (see below), whose sum is σ = 8398185096. Its totient is φ = 1599654288.

The previous prime is 3999135739. The next prime is 3999135773. The reversal of 3999135740 is 475319993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99978374 + ... + 99978413.

It is an arithmetic number, because the mean of its divisors is an integer number (699848758).

Almost surely, 2^3999135740 is an apocalyptic number.

It is an amenable number.

3999135740 is an abundant number, since it is smaller than the sum of its proper divisors (4399049356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3999135740 is a wasteful number, since it uses less digits than its factorization.

3999135740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199956796 (or 199956794 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 3999135740 is about 63238.7202590312. The cubic root of 3999135740 is about 1587.2867164637.

The spelling of 3999135740 in words is "three billion, nine hundred ninety-nine million, one hundred thirty-five thousand, seven hundred forty".