39670446693 has 16 divisors (see below), whose sum is σ = 55878845120. Its totient is φ = 24964557696.

The previous prime is 39670446691. The next prime is 39670446701. The reversal of 39670446693 is 39664407693.

It is not a de Polignac number, because 39670446693 - 2¹ = 39670446691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39670446691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1240480 + ... + 1272057.

It is an arithmetic number, because the mean of its divisors is an integer number (3492427820).

Almost surely, 2^39670446693 is an apocalyptic number.

It is an amenable number.

39670446693 is a deficient number, since it is larger than the sum of its proper divisors (16208398427).

39670446693 is a wasteful number, since it uses less digits than its factorization.

39670446693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512836.

The product of its (nonzero) digits is 17635968, while the sum is 57.

The spelling of 39670446693 in words is "thirty-nine billion, six hundred seventy million, four hundred forty-six thousand, six hundred ninety-three".