119953991 has 2 divisors, whose sum is σ = 119953992. Its totient is φ = 119953990.

The previous prime is 119953969. The next prime is 119953997. The reversal of 119953991 is 199359911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 119953991 - 2¹⁰ = 119952967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (119953997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59976995 + 59976996.

It is an arithmetic number, because the mean of its divisors is an integer number (59976996).

Almost surely, 2^119953991 is an apocalyptic number.

119953991 is a deficient number, since it is larger than the sum of its proper divisors (1).

119953991 is an equidigital number, since it uses as much as digits as its factorization.

119953991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98415, while the sum is 47.

The square root of 119953991 is about 10952.3509348450. The cubic root of 119953991 is about 493.1793690572.

The spelling of 119953991 in words is "one hundred nineteen million, nine hundred fifty-three thousand, nine hundred ninety-one".