99457790 has 8 divisors (see below), whose sum is σ = 179024040. Its totient is φ = 39783112.

The previous prime is 99457763. The next prime is 99457793. The reversal of 99457790 is 9775499.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99457793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4972880 + ... + 4972899.

It is an arithmetic number, because the mean of its divisors is an integer number (22378005).

Almost surely, 2^99457790 is an apocalyptic number.

99457790 is a deficient number, since it is larger than the sum of its proper divisors (79566250).

99457790 is a wasteful number, since it uses less digits than its factorization.

99457790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9945786.

The product of its (nonzero) digits is 714420, while the sum is 50.

The square root of 99457790 is about 9972.8526510723. The cubic root of 99457790 is about 463.3184572742.

The spelling of 99457790 in words is "ninety-nine million, four hundred fifty-seven thousand, seven hundred ninety".