39378699 has 6 divisors (see below), whose sum is σ = 56880356. Its totient is φ = 26252460.

The previous prime is 39378683. The next prime is 39378701. The reversal of 39378699 is 99687393.

It is not a de Polignac number, because 39378699 - 2⁴ = 39378683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39378299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2187697 + ... + 2187714.

Almost surely, 2^39378699 is an apocalyptic number.

39378699 is a deficient number, since it is larger than the sum of its proper divisors (17501657).

39378699 is a wasteful number, since it uses less digits than its factorization.

39378699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375417 (or 4375414 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 39378699 is about 6275.2449354587. The cubic root of 39378699 is about 340.2152587283.

The spelling of 39378699 in words is "thirty-nine million, three hundred seventy-eight thousand, six hundred ninety-nine".