814501389 has 16 divisors (see below), whose sum is σ = 1182686400. Its totient is φ = 495597696.

The previous prime is 814501349. The next prime is 814501397. The reversal of 814501389 is 983105418.

It is not a de Polignac number, because 814501389 - 2⁹ = 814500877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814501339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113859 + ... + 120800.

It is an arithmetic number, because the mean of its divisors is an integer number (73917900).

Almost surely, 2^814501389 is an apocalyptic number.

814501389 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

814501389 is a deficient number, since it is larger than the sum of its proper divisors (368185011).

814501389 is a wasteful number, since it uses less digits than its factorization.

814501389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234764.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 814501389 is about 28539.4707203900. The cubic root of 814501389 is about 933.8933360242.

The spelling of 814501389 in words is "eight hundred fourteen million, five hundred one thousand, three hundred eighty-nine".