38477861 has 4 divisors (see below), whose sum is σ = 38505324. Its totient is φ = 38450400.

The previous prime is 38477849. The next prime is 38477893. The reversal of 38477861 is 16877483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16877483 = 7 ⋅2411069.

It can be written as a sum of positive squares in 2 ways, for example, as 18541636 + 19936225 = 4306^2 + 4465^2 .

It is a cyclic number.

It is not a de Polignac number, because 38477861 - 2⁶ = 38477797 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 (38477801) 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, 11510 + ... + 14471.

It is an arithmetic number, because the mean of its divisors is an integer number (9626331).

Almost surely, 2^38477861 is an apocalyptic number.

It is an amenable number.

38477861 is a deficient number, since it is larger than the sum of its proper divisors (27463).

38477861 is a wasteful number, since it uses less digits than its factorization.

38477861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27462.

The product of its digits is 225792, while the sum is 44.

The square root of 38477861 is about 6203.0525549926. The cubic root of 38477861 is about 337.6009347857.

The spelling of 38477861 in words is "thirty-eight million, four hundred seventy-seven thousand, eight hundred sixty-one".