99378442 has 4 divisors (see below), whose sum is σ = 149067666. Its totient is φ = 49689220.

The previous prime is 99378427. The next prime is 99378451. The reversal of 99378442 is 24487399.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 70207641 + 29170801 = 8379^2 + 5401^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99378392 and 99378401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24844609 + ... + 24844612.

Almost surely, 2^99378442 is an apocalyptic number.

99378442 is a deficient number, since it is larger than the sum of its proper divisors (49689224).

99378442 is a wasteful number, since it uses less digits than its factorization.

99378442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49689223.

The product of its digits is 435456, while the sum is 46.

The square root of 99378442 is about 9968.8736575403. The cubic root of 99378442 is about 463.1952117782.

The spelling of 99378442 in words is "ninety-nine million, three hundred seventy-eight thousand, four hundred forty-two".