99997001 has 8 divisors (see below), whose sum is σ = 107769480. Its totient is φ = 92236032.

The previous prime is 99996983. The next prime is 99997033. The reversal of 99997001 is 10079999.

It can be written as a sum of positive squares in 4 ways, for example, as 9461776 + 90535225 = 3076^2 + 9515^2 .

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-99997001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99997081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25871 + ... + 29483.

It is an arithmetic number, because the mean of its divisors is an integer number (13471185).

Almost surely, 2^99997001 is an apocalyptic number.

It is an amenable number.

99997001 is a deficient number, since it is larger than the sum of its proper divisors (7772479).

99997001 is a wasteful number, since it uses less digits than its factorization.

99997001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 99997001 is about 9999.8500488757. The cubic root of 99997001 is about 464.1542432733.

The spelling of 99997001 in words is "ninety-nine million, nine hundred ninety-seven thousand, one".