133791417 has 6 divisors (see below), whose sum is σ = 193254282. Its totient is φ = 89194272.

The previous prime is 133791403. The next prime is 133791431. The reversal of 133791417 is 714197331.

It is an interprime number because it is at equal distance from previous prime (133791403) and next prime (133791431).

It can be written as a sum of positive squares in only one way, i.e., 129481641 + 4309776 = 11379^2 + 2076^2 .

It is not a de Polignac number, because 133791417 - 2⁶ = 133791353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133791517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7432848 + ... + 7432865.

It is an arithmetic number, because the mean of its divisors is an integer number (32209047).

Almost surely, 2^133791417 is an apocalyptic number.

It is an amenable number.

133791417 is a deficient number, since it is larger than the sum of its proper divisors (59462865).

133791417 is a wasteful number, since it uses less digits than its factorization.

133791417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14865719 (or 14865716 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 133791417 is about 11566.8239806785. The cubic root of 133791417 is about 511.4573425840.

The spelling of 133791417 in words is "one hundred thirty-three million, seven hundred ninety-one thousand, four hundred seventeen".