38955139 has 4 divisors (see below), whose sum is σ = 38974320. Its totient is φ = 38935960.

The previous prime is 38955107. The next prime is 38955157. The reversal of 38955139 is 93155983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93155983 = 4327 ⋅21529.

It is a cyclic number.

It is not a de Polignac number, because 38955139 - 2⁵ = 38955107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38955095 and 38955104.

It is not an unprimeable number, because it can be changed into a prime (38955199) 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, 6127 + ... + 10744.

It is an arithmetic number, because the mean of its divisors is an integer number (9743580).

Almost surely, 2^38955139 is an apocalyptic number.

38955139 is a deficient number, since it is larger than the sum of its proper divisors (19181).

38955139 is a wasteful number, since it uses less digits than its factorization.

38955139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19180.

The product of its digits is 145800, while the sum is 43.

The square root of 38955139 is about 6241.4052103673. The cubic root of 38955139 is about 338.9910660913.

The spelling of 38955139 in words is "thirty-eight million, nine hundred fifty-five thousand, one hundred thirty-nine".