389812451 has 4 divisors (see below), whose sum is σ = 445499952. Its totient is φ = 334124952.

The previous prime is 389812447. The next prime is 389812453. The reversal of 389812451 is 154218983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154218983 = 3533 ⋅43651.

It is not a de Polignac number, because 389812451 - 2² = 389812447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389812399 and 389812408.

It is not an unprimeable number, because it can be changed into a prime (389812453) 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, 27843740 + ... + 27843753.

It is an arithmetic number, because the mean of its divisors is an integer number (111374988).

Almost surely, 2^389812451 is an apocalyptic number.

389812451 is a deficient number, since it is larger than the sum of its proper divisors (55687501).

389812451 is an equidigital number, since it uses as much as digits as its factorization.

389812451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55687500.

The product of its digits is 69120, while the sum is 41.

The square root of 389812451 is about 19743.6686307282. The cubic root of 389812451 is about 730.4972223952.

The spelling of 389812451 in words is "three hundred eighty-nine million, eight hundred twelve thousand, four hundred fifty-one".