45434639 has 4 divisors (see below), whose sum is σ = 45875856. Its totient is φ = 44993424.

The previous prime is 45434633. The next prime is 45434647. The reversal of 45434639 is 93643454.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93643454 = 2 ⋅46821727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45434639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45434633) 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, 220454 + ... + 220659.

It is an arithmetic number, because the mean of its divisors is an integer number (11468964).

Almost surely, 2^45434639 is an apocalyptic number.

45434639 is a deficient number, since it is larger than the sum of its proper divisors (441217).

45434639 is a wasteful number, since it uses less digits than its factorization.

45434639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441216.

The product of its digits is 155520, while the sum is 38.

The square root of 45434639 is about 6740.5221607825. The cubic root of 45434639 is about 356.8308221369.

The spelling of 45434639 in words is "forty-five million, four hundred thirty-four thousand, six hundred thirty-nine".