38406863 has 4 divisors (see below), whose sum is σ = 41898408. Its totient is φ = 34915320.

The previous prime is 38406763. The next prime is 38406883. The reversal of 38406863 is 36860483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36860483 = 11 ⋅3350953.

It is not a de Polignac number, because 38406863 - 2⁸ = 38406607 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 (38406883) 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, 1745756 + ... + 1745777.

It is an arithmetic number, because the mean of its divisors is an integer number (10474602).

Almost surely, 2^38406863 is an apocalyptic number.

38406863 is a deficient number, since it is larger than the sum of its proper divisors (3491545).

38406863 is a wasteful number, since it uses less digits than its factorization.

38406863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491544.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 38406863 is about 6197.3270851231. The cubic root of 38406863 is about 337.3931638067.

The spelling of 38406863 in words is "thirty-eight million, four hundred six thousand, eight hundred sixty-three".