745389 has 16 divisors (see below), whose sum is σ = 1163200. Its totient is φ = 470448.

The previous prime is 745379. The next prime is 745391. The reversal of 745389 is 983547.

745389 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 745389 - 2⁵ = 745357 is a prime.

It is a super-2 number, since 2×745389² = 1111209522642, 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 (745369) 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, 214 + ... + 1239.

It is an arithmetic number, because the mean of its divisors is an integer number (72700).

2⁷⁴⁵³⁸⁹ is an apocalyptic number.

It is an amenable number.

745389 is a deficient number, since it is larger than the sum of its proper divisors (417811).

745389 is a wasteful number, since it uses less digits than its factorization.

745389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1475 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 745389 is about 863.3591373235. The cubic root of 745389 is about 90.6694524687.

It can be divided in two parts, 74538 and 9, that added together give a palindrome (74547).

The spelling of 745389 in words is "seven hundred forty-five thousand, three hundred eighty-nine".