38455789 has 4 divisors (see below), whose sum is σ = 39029824. Its totient is φ = 37881756.

The previous prime is 38455783. The next prime is 38455811. The reversal of 38455789 is 98755483.

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.

It is a cyclic number.

It is not a de Polignac number, because 38455789 - 2⁵ = 38455757 is a prime.

It is a super-2 number, since 2×38455789² = 2957695415225042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38455783) 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, 286917 + ... + 287050.

It is an arithmetic number, because the mean of its divisors is an integer number (9757456).

Almost surely, 2^38455789 is an apocalyptic number.

It is an amenable number.

38455789 is a deficient number, since it is larger than the sum of its proper divisors (574035).

38455789 is an equidigital number, since it uses as much as digits as its factorization.

38455789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574034.

The product of its digits is 1209600, while the sum is 49.

The square root of 38455789 is about 6201.2731757277. The cubic root of 38455789 is about 337.5363699260.

The spelling of 38455789 in words is "thirty-eight million, four hundred fifty-five thousand, seven hundred eighty-nine".