117899801 has 2 divisors, whose sum is σ = 117899802. Its totient is φ = 117899800.

The previous prime is 117899779. The next prime is 117899809. The reversal of 117899801 is 108998711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101707225 + 16192576 = 10085^2 + 4024^2 .

It is an emirp because it is prime and its reverse (108998711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117899801 - 2⁶ = 117899737 is a prime.

It is not a weakly prime, because it can be changed into another prime (117899809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58949900 + 58949901.

It is an arithmetic number, because the mean of its divisors is an integer number (58949901).

Almost surely, 2^117899801 is an apocalyptic number.

It is an amenable number.

117899801 is a deficient number, since it is larger than the sum of its proper divisors (1).

117899801 is an equidigital number, since it uses as much as digits as its factorization.

117899801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 44.

The square root of 117899801 is about 10858.1674789073. The cubic root of 117899801 is about 490.3479425153.

The spelling of 117899801 in words is "one hundred seventeen million, eight hundred ninety-nine thousand, eight hundred one".