478743487 has 4 divisors (see below), whose sum is σ = 479160576. Its totient is φ = 478326400.

The previous prime is 478743479. The next prime is 478743493. The reversal of 478743487 is 784347874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784347874 = 2 ⋅392173937.

It is a cyclic number.

It is not a de Polignac number, because 478743487 - 2³ = 478743479 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 (478743427) 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, 206818 + ... + 209119.

It is an arithmetic number, because the mean of its divisors is an integer number (119790144).

Almost surely, 2^478743487 is an apocalyptic number.

478743487 is a deficient number, since it is larger than the sum of its proper divisors (417089).

478743487 is a wasteful number, since it uses less digits than its factorization.

478743487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417088.

The product of its digits is 4214784, while the sum is 52.

The square root of 478743487 is about 21880.2076544077. The cubic root of 478743487 is about 782.2897253695.

The spelling of 478743487 in words is "four hundred seventy-eight million, seven hundred forty-three thousand, four hundred eighty-seven".