45439403 has 4 divisors (see below), whose sum is σ = 45502128. Its totient is φ = 45376680.

The previous prime is 45439379. The next prime is 45439409. The reversal of 45439403 is 30493454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30493454 = 2 ⋅15246727.

It is a cyclic number.

It is not a de Polignac number, because 45439403 - 2¹² = 45435307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45439403.

It is not an unprimeable number, because it can be changed into a prime (45439409) 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, 30263 + ... + 31728.

It is an arithmetic number, because the mean of its divisors is an integer number (11375532).

Almost surely, 2^45439403 is an apocalyptic number.

45439403 is a deficient number, since it is larger than the sum of its proper divisors (62725).

45439403 is an equidigital number, since it uses as much as digits as its factorization.

45439403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62724.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 45439403 is about 6740.8755366050. The cubic root of 45439403 is about 356.8432934045.

The spelling of 45439403 in words is "forty-five million, four hundred thirty-nine thousand, four hundred three".