38953861 has 4 divisors (see below), whose sum is σ = 38973312. Its totient is φ = 38934412.

The previous prime is 38953853. The next prime is 38953883. The reversal of 38953861 is 16835983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16835983 = 113 ⋅148991.

It is a cyclic number.

It is not a de Polignac number, because 38953861 - 2³ = 38953853 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 (38956861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6325 + ... + 10858.

It is an arithmetic number, because the mean of its divisors is an integer number (9743328).

Almost surely, 2^38953861 is an apocalyptic number.

It is an amenable number.

38953861 is a deficient number, since it is larger than the sum of its proper divisors (19451).

38953861 is a wasteful number, since it uses less digits than its factorization.

38953861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19450.

The product of its digits is 155520, while the sum is 43.

The square root of 38953861 is about 6241.3028287370. The cubic root of 38953861 is about 338.9873589611.

The spelling of 38953861 in words is "thirty-eight million, nine hundred fifty-three thousand, eight hundred sixty-one".