39128099 has 4 divisors (see below), whose sum is σ = 39261936. Its totient is φ = 38994264.

The previous prime is 39128093. The next prime is 39128113. The reversal of 39128099 is 99082193.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39128099 - 2¹⁶ = 39062563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39128093) 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, 66479 + ... + 67064.

It is an arithmetic number, because the mean of its divisors is an integer number (9815484).

Almost surely, 2^39128099 is an apocalyptic number.

39128099 is a deficient number, since it is larger than the sum of its proper divisors (133837).

39128099 is a wasteful number, since it uses less digits than its factorization.

39128099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133836.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 39128099 is about 6255.2457185949. The cubic root of 39128099 is about 339.4920298059.

The spelling of 39128099 in words is "thirty-nine million, one hundred twenty-eight thousand, ninety-nine".