99380642 has 4 divisors (see below), whose sum is σ = 149070966. Its totient is φ = 49690320.

The previous prime is 99380609. The next prime is 99380647. The reversal of 99380642 is 24608399.

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., 87067561 + 12313081 = 9331^2 + 3509^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99380642.

It is not an unprimeable number, because it can be changed into a prime (99380647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24845159 + ... + 24845162.

Almost surely, 2^99380642 is an apocalyptic number.

99380642 is a deficient number, since it is larger than the sum of its proper divisors (49690324).

99380642 is a wasteful number, since it uses less digits than its factorization.

99380642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49690323.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 99380642 is about 9968.9840003884. The cubic root of 99380642 is about 463.1986297628.

The spelling of 99380642 in words is "ninety-nine million, three hundred eighty thousand, six hundred forty-two".