39700039 has 4 divisors (see below), whose sum is σ = 39720024. Its totient is φ = 39680056.

The previous prime is 39700027. The next prime is 39700061. The reversal of 39700039 is 93000793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93000793 = 229 ⋅406117.

It is a cyclic number.

It is not a de Polignac number, because 39700039 - 2¹¹ = 39697991 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 (39700009) 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, 6637 + ... + 11110.

It is an arithmetic number, because the mean of its divisors is an integer number (9930006).

Almost surely, 2^39700039 is an apocalyptic number.

39700039 is a deficient number, since it is larger than the sum of its proper divisors (19985).

39700039 is a wasteful number, since it uses less digits than its factorization.

39700039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19984.

The product of its (nonzero) digits is 5103, while the sum is 31.

The square root of 39700039 is about 6300.7966956568. The cubic root of 39700039 is about 341.1381666488.

The spelling of 39700039 in words is "thirty-nine million, seven hundred thousand, thirty-nine".