39699306487 has 4 divisors (see below), whose sum is σ = 41068248120. Its totient is φ = 38330364856.

The previous prime is 39699306481. The next prime is 39699306499. The reversal of 39699306487 is 78460399693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39699306487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39699306481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684470773 + ... + 684470830.

It is an arithmetic number, because the mean of its divisors is an integer number (10267062030).

Almost surely, 2^39699306487 is an apocalyptic number.

39699306487 is a deficient number, since it is larger than the sum of its proper divisors (1368941633).

39699306487 is a wasteful number, since it uses less digits than its factorization.

39699306487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368941632.

The product of its (nonzero) digits is 52907904, while the sum is 64.

The spelling of 39699306487 in words is "thirty-nine billion, six hundred ninety-nine million, three hundred six thousand, four hundred eighty-seven".