45394 has 4 divisors (see below), whose sum is σ = 68094. Its totient is φ = 22696.

The previous prime is 45389. The next prime is 45403. The reversal of 45394 is 49354.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49354 = 2 ⋅24677.

It can be written as a sum of positive squares in only one way, i.e., 45369 + 25 = 213^2 + 5^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11347 + ... + 11350.

2⁴⁵³⁹⁴ is an apocalyptic number.

45394 is a deficient number, since it is larger than the sum of its proper divisors (22700).

45394 is a wasteful number, since it uses less digits than its factorization.

45394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22699.

The product of its digits is 2160, while the sum is 25.

The square root of 45394 is about 213.0586773638. The cubic root of 45394 is about 35.6724401325.

Subtracting from 45394 its sum of digits (25), we obtain a square (45369 = 213²).

Subtracting from 45394 its product of digits (2160), we obtain a palindrome (43234).

The spelling of 45394 in words is "forty-five thousand, three hundred ninety-four".