133994879 has 2 divisors, whose sum is σ = 133994880. Its totient is φ = 133994878.

The previous prime is 133994851. The next prime is 133994891. The reversal of 133994879 is 978499331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133994879 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133994879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133997879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66997439 + 66997440.

It is an arithmetic number, because the mean of its divisors is an integer number (66997440).

Almost surely, 2^133994879 is an apocalyptic number.

133994879 is a deficient number, since it is larger than the sum of its proper divisors (1).

133994879 is an equidigital number, since it uses as much as digits as its factorization.

133994879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 53.

The square root of 133994879 is about 11575.6157071665. The cubic root of 133994879 is about 511.7164758682.

The spelling of 133994879 in words is "one hundred thirty-three million, nine hundred ninety-four thousand, eight hundred seventy-nine".