39770985 has 32 divisors (see below), whose sum is σ = 66493440. Its totient is φ = 20296320.

The previous prime is 39770957. The next prime is 39770987. The reversal of 39770985 is 58907793.

It is not a de Polignac number, because 39770985 - 2⁵ = 39770953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39770987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446821 + ... + 446909.

It is an arithmetic number, because the mean of its divisors is an integer number (2077920).

Almost surely, 2^39770985 is an apocalyptic number.

It is an amenable number.

39770985 is a deficient number, since it is larger than the sum of its proper divisors (26722455).

39770985 is an frugal number, since it uses more digits than its factorization.

39770985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 39770985 is about 6306.4241056244. The cubic root of 39770985 is about 341.3412561697.

It can be divided in two parts, 39770 and 985, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 39770985 in words is "thirty-nine million, seven hundred seventy thousand, nine hundred eighty-five".