133469393 has 2 divisors, whose sum is σ = 133469394. Its totient is φ = 133469392.

The previous prime is 133469351. The next prime is 133469407. The reversal of 133469393 is 393964331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124367104 + 9102289 = 11152^2 + 3017^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133469393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133469393.

It is not a weakly prime, because it can be changed into another prime (133469093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66734696 + 66734697.

It is an arithmetic number, because the mean of its divisors is an integer number (66734697).

Almost surely, 2^133469393 is an apocalyptic number.

It is an amenable number.

133469393 is a deficient number, since it is larger than the sum of its proper divisors (1).

133469393 is an equidigital number, since it uses as much as digits as its factorization.

133469393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 41.

The square root of 133469393 is about 11552.8954379411. The cubic root of 133469393 is about 511.0466688637.

The spelling of 133469393 in words is "one hundred thirty-three million, four hundred sixty-nine thousand, three hundred ninety-three".