99790439 has 8 divisors (see below), whose sum is σ = 114132480. Its totient is φ = 85469976.

The previous prime is 99790409. The next prime is 99790441. The reversal of 99790439 is 93409799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99790439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99790409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6182 + ... + 15420.

It is an arithmetic number, because the mean of its divisors is an integer number (14266560).

Almost surely, 2^99790439 is an apocalyptic number.

99790439 is a deficient number, since it is larger than the sum of its proper divisors (14342041).

99790439 is a wasteful number, since it uses less digits than its factorization.

99790439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10789.

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 99790439 is about 9989.5164547640. The cubic root of 99790439 is about 463.8344246101.

The spelling of 99790439 in words is "ninety-nine million, seven hundred ninety thousand, four hundred thirty-nine".