38999699 has 4 divisors (see below), whose sum is σ = 39019536. Its totient is φ = 38979864.

The previous prime is 38999687. The next prime is 38999713. The reversal of 38999699 is 99699983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99699983 = 103 ⋅967961.

It is a cyclic number.

It is not a de Polignac number, because 38999699 - 2¹⁶ = 38934163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38999629) 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, 6599 + ... + 11024.

It is an arithmetic number, because the mean of its divisors is an integer number (9754884).

Almost surely, 2^38999699 is an apocalyptic number.

38999699 is a deficient number, since it is larger than the sum of its proper divisors (19837).

38999699 is a wasteful number, since it uses less digits than its factorization.

38999699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19836.

The product of its digits is 8503056, while the sum is 62.

The square root of 38999699 is about 6244.9738990648. The cubic root of 38999699 is about 339.1202718593.

The spelling of 38999699 in words is "thirty-eight million, nine hundred ninety-nine thousand, six hundred ninety-nine".