38992699 has 4 divisors (see below), whose sum is σ = 40250560. Its totient is φ = 37734840.

The previous prime is 38992673. The next prime is 38992729. The reversal of 38992699 is 99629983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99629983 = 53 ⋅1879811.

It is a cyclic number.

It is not a de Polignac number, because 38992699 - 2¹⁹ = 38468411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38992669) 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, 628884 + ... + 628945.

It is an arithmetic number, because the mean of its divisors is an integer number (10062640).

Almost surely, 2^38992699 is an apocalyptic number.

38992699 is a deficient number, since it is larger than the sum of its proper divisors (1257861).

38992699 is a wasteful number, since it uses less digits than its factorization.

38992699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257860.

The product of its digits is 1889568, while the sum is 55.

The square root of 38992699 is about 6244.4134232128. The cubic root of 38992699 is about 339.0999812417.

The spelling of 38992699 in words is "thirty-eight million, nine hundred ninety-two thousand, six hundred ninety-nine".