118993997 has 2 divisors, whose sum is σ = 118993998. Its totient is φ = 118993996.

The previous prime is 118993969. The next prime is 118994011. The reversal of 118993997 is 799399811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117050761 + 1943236 = 10819^2 + 1394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118993997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118993967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59496998 + 59496999.

It is an arithmetic number, because the mean of its divisors is an integer number (59496999).

Almost surely, 2^118993997 is an apocalyptic number.

It is an amenable number.

118993997 is a deficient number, since it is larger than the sum of its proper divisors (1).

118993997 is an equidigital number, since it uses as much as digits as its factorization.

118993997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 56.

The square root of 118993997 is about 10908.4369641118. The cubic root of 118993997 is about 491.8602024764.

The spelling of 118993997 in words is "one hundred eighteen million, nine hundred ninety-three thousand, nine hundred ninety-seven".