39705740 has 12 divisors (see below), whose sum is σ = 83382096. Its totient is φ = 15882288.

The previous prime is 39705737. The next prime is 39705781. The reversal of 39705740 is 4750793.

It is a self number, because there is not a number n which added to its sum of digits gives 39705740.

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, 992624 + ... + 992663.

It is an arithmetic number, because the mean of its divisors is an integer number (6948508).

Almost surely, 2^39705740 is an apocalyptic number.

It is an amenable number.

39705740 is an abundant number, since it is smaller than the sum of its proper divisors (43676356).

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

39705740 is a wasteful number, since it uses less digits than its factorization.

39705740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985296 (or 1985294 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 39705740 is about 6301.2490825232. The cubic root of 39705740 is about 341.1544952272.

The spelling of 39705740 in words is "thirty-nine million, seven hundred five thousand, seven hundred forty".