45739 has 4 divisors (see below), whose sum is σ = 46656. Its totient is φ = 44824.

The previous prime is 45737. The next prime is 45751. The reversal of 45739 is 93754.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93754 = 2 ⋅46877.

It is a cyclic number.

It is not a de Polignac number, because 45739 - 2¹ = 45737 is a prime.

It is a super-2 number, since 2×45739² = 4184112242, which contains 22 as substring.

It is a Duffinian number.

45739 is a lucky number.

It is a plaindrome in base 12.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (45737) 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, 379 + ... + 484.

It is an arithmetic number, because the mean of its divisors is an integer number (11664).

2⁴⁵⁷³⁹ is an apocalyptic number.

45739 is a deficient number, since it is larger than the sum of its proper divisors (917).

45739 is an equidigital number, since it uses as much as digits as its factorization.

45739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its digits is 3780, while the sum is 28.

The square root of 45739 is about 213.8667809642. The cubic root of 45739 is about 35.7625837977.

It can be divided in two parts, 457 and 39, that added together give a triangular number (496 = T₃₁).

The spelling of 45739 in words is "forty-five thousand, seven hundred thirty-nine".