39706399 has 8 divisors (see below), whose sum is σ = 40817088. Its totient is φ = 38606880.

The previous prime is 39706393. The next prime is 39706451. The reversal of 39706399 is 99360793.

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 39706399 - 2⁵ = 39706367 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 (39706393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4689 + ... + 10069.

It is an arithmetic number, because the mean of its divisors is an integer number (5102136).

Almost surely, 2^39706399 is an apocalyptic number.

39706399 is a deficient number, since it is larger than the sum of its proper divisors (1110689).

39706399 is a wasteful number, since it uses less digits than its factorization.

39706399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5585.

The product of its (nonzero) digits is 275562, while the sum is 46.

The square root of 39706399 is about 6301.3013735259. The cubic root of 39706399 is about 341.1563826082.

The spelling of 39706399 in words is "thirty-nine million, seven hundred six thousand, three hundred ninety-nine".