45439478 has 16 divisors (see below), whose sum is σ = 80002464. Its totient is φ = 18947520.

The previous prime is 45439477. The next prime is 45439501. The reversal of 45439478 is 87493454.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45439477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43343 + ... + 44378.

It is an arithmetic number, because the mean of its divisors is an integer number (5000154).

Almost surely, 2^45439478 is an apocalyptic number.

45439478 is a deficient number, since it is larger than the sum of its proper divisors (34562986).

45439478 is a wasteful number, since it uses less digits than its factorization.

45439478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87767.

The product of its digits is 483840, while the sum is 44.

The square root of 45439478 is about 6740.8810996783. The cubic root of 45439478 is about 356.8434897337.

The spelling of 45439478 in words is "forty-five million, four hundred thirty-nine thousand, four hundred seventy-eight".