38888887 has 4 divisors (see below), whose sum is σ = 39939976. Its totient is φ = 37837800.

The previous prime is 38888879. The next prime is 38888891. The reversal of 38888887 is 78888883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78888883 = 5717 ⋅13799.

It is a cyclic number.

It is not a de Polignac number, because 38888887 - 2³ = 38888879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38888807) 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, 525489 + ... + 525562.

It is an arithmetic number, because the mean of its divisors is an integer number (9984994).

Almost surely, 2^38888887 is an apocalyptic number.

38888887 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

38888887 is a deficient number, since it is larger than the sum of its proper divisors (1051089).

38888887 is a wasteful number, since it uses less digits than its factorization.

38888887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051088.

The product of its digits is 5505024, while the sum is 58.

The square root of 38888887 is about 6236.0954931752. The cubic root of 38888887 is about 338.7987801196.

The spelling of 38888887 in words is "thirty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-seven".