388900261 has 8 divisors (see below), whose sum is σ = 407873664. Its totient is φ = 370098960.

The previous prime is 388900243. The next prime is 388900277. The reversal of 388900261 is 162009883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 388900261 - 2⁷ = 388900133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388900261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388900201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38385 + ... + 47446.

It is an arithmetic number, because the mean of its divisors is an integer number (50984208).

Almost surely, 2^388900261 is an apocalyptic number.

It is an amenable number.

388900261 is a deficient number, since it is larger than the sum of its proper divisors (18973403).

388900261 is a wasteful number, since it uses less digits than its factorization.

388900261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86051.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 388900261 is about 19720.5542772002. The cubic root of 388900261 is about 729.9269714898.

The spelling of 388900261 in words is "three hundred eighty-eight million, nine hundred thousand, two hundred sixty-one".