83454478 has 4 divisors (see below), whose sum is σ = 125181720. Its totient is φ = 41727238.

The previous prime is 83454457. The next prime is 83454521. The reversal of 83454478 is 87445438.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20863618 + ... + 20863621.

It is an arithmetic number, because the mean of its divisors is an integer number (31295430).

Almost surely, 2^83454478 is an apocalyptic number.

83454478 is a deficient number, since it is larger than the sum of its proper divisors (41727242).

83454478 is a wasteful number, since it uses less digits than its factorization.

83454478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41727241.

The product of its digits is 430080, while the sum is 43.

The square root of 83454478 is about 9135.3422486517. The cubic root of 83454478 is about 437.0017891138.

The spelling of 83454478 in words is "eighty-three million, four hundred fifty-four thousand, four hundred seventy-eight".