99754478 has 4 divisors (see below), whose sum is σ = 149631720. Its totient is φ = 49877238.

The previous prime is 99754451. The next prime is 99754481. The reversal of 99754478 is 87445799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87445799 = 7 ⋅12492257.

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, 24938618 + ... + 24938621.

It is an arithmetic number, because the mean of its divisors is an integer number (37407930).

Almost surely, 2^99754478 is an apocalyptic number.

99754478 is a deficient number, since it is larger than the sum of its proper divisors (49877242).

99754478 is a wasteful number, since it uses less digits than its factorization.

99754478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49877241.

The product of its digits is 2540160, while the sum is 53.

The square root of 99754478 is about 9987.7163556040. The cubic root of 99754478 is about 463.7787013233.

The spelling of 99754478 in words is "ninety-nine million, seven hundred fifty-four thousand, four hundred seventy-eight".