11953999 has 2 divisors, whose sum is σ = 11954000. Its totient is φ = 11953998.

The previous prime is 11953973. The next prime is 11954011. The reversal of 11953999 is 99935911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11953999 - 2⁵ = 11953967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11959999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5976999 + 5977000.

It is an arithmetic number, because the mean of its divisors is an integer number (5977000).

Almost surely, 2^11953999 is an apocalyptic number.

11953999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11953999 is an equidigital number, since it uses as much as digits as its factorization.

11953999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98415, while the sum is 46.

The square root of 11953999 is about 3457.4555673211. The cubic root of 11953999 is about 228.6499294539.

The spelling of 11953999 in words is "eleven million, nine hundred fifty-three thousand, nine hundred ninety-nine".