99090701 has 4 divisors (see below), whose sum is σ = 99999900. Its totient is φ = 98181504.

The previous prime is 99090689. The next prime is 99090763. The reversal of 99090701 is 10709099.

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 2 ways, for example, as 59274601 + 39816100 = 7699^2 + 6310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99090701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99090001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454436 + ... + 454653.

It is an arithmetic number, because the mean of its divisors is an integer number (24999975).

Almost surely, 2^99090701 is an apocalyptic number.

It is an amenable number.

99090701 is a deficient number, since it is larger than the sum of its proper divisors (909199).

99090701 is a wasteful number, since it uses less digits than its factorization.

99090701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909198.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 99090701 is about 9954.4312243342. The cubic root of 99090701 is about 462.7477334601.

The spelling of 99090701 in words is "ninety-nine million, ninety thousand, seven hundred one".