39970687 has 8 divisors (see below), whose sum is σ = 41346560. Its totient is φ = 38600280.

The previous prime is 39970681. The next prime is 39970691. The reversal of 39970687 is 78607993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39970687 - 2¹¹ = 39968639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39970687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39970681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18148 + ... + 20230.

It is an arithmetic number, because the mean of its divisors is an integer number (5168320).

Almost surely, 2^39970687 is an apocalyptic number.

39970687 is a deficient number, since it is larger than the sum of its proper divisors (1375873).

39970687 is a wasteful number, since it uses less digits than its factorization.

39970687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 39970687 is about 6322.2374994934. The cubic root of 39970687 is about 341.9116280452.

The spelling of 39970687 in words is "thirty-nine million, nine hundred seventy thousand, six hundred eighty-seven".