112991407 has 2 divisors, whose sum is σ = 112991408. Its totient is φ = 112991406.

The previous prime is 112991393. The next prime is 112991419. The reversal of 112991407 is 704199211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 112991407 - 2¹⁹ = 112467119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112991467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56495703 + 56495704.

It is an arithmetic number, because the mean of its divisors is an integer number (56495704).

Almost surely, 2^112991407 is an apocalyptic number.

112991407 is a deficient number, since it is larger than the sum of its proper divisors (1).

112991407 is an equidigital number, since it uses as much as digits as its factorization.

112991407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 112991407 is about 10629.7416243294. The cubic root of 112991407 is about 483.4465576466.

The spelling of 112991407 in words is "one hundred twelve million, nine hundred ninety-one thousand, four hundred seven".