38877407 has 2 divisors, whose sum is σ = 38877408. Its totient is φ = 38877406.

The previous prime is 38877361. The next prime is 38877409. The reversal of 38877407 is 70477883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38877407 - 2²⁰ = 37828831 is a prime.

It is a super-2 number, since 2×38877407² = 3022905550087298, which contains 22 as substring.

Together with 38877409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38877409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19438703 + 19438704.

It is an arithmetic number, because the mean of its divisors is an integer number (19438704).

Almost surely, 2^38877407 is an apocalyptic number.

38877407 is a deficient number, since it is larger than the sum of its proper divisors (1).

38877407 is an equidigital number, since it uses as much as digits as its factorization.

38877407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 38877407 is about 6235.1749774966. The cubic root of 38877407 is about 338.7654390371.

The spelling of 38877407 in words is "thirty-eight million, eight hundred seventy-seven thousand, four hundred seven".