133345779 has 16 divisors (see below), whose sum is σ = 203643648. Its totient is φ = 76028832.

The previous prime is 133345769. The next prime is 133345783. The reversal of 133345779 is 977543331.

It is not a de Polignac number, because 133345779 - 2¹² = 133341683 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 133345779.

It is not an unprimeable number, because it can be changed into a prime (133345769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3009 + ... + 16605.

It is an arithmetic number, because the mean of its divisors is an integer number (12727728).

Almost surely, 2^133345779 is an apocalyptic number.

133345779 is a deficient number, since it is larger than the sum of its proper divisors (70297869).

133345779 is a wasteful number, since it uses less digits than its factorization.

133345779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14074.

The product of its digits is 238140, while the sum is 42.

The square root of 133345779 is about 11547.5442843922. The cubic root of 133345779 is about 510.8888498208. Note that the first 4 decimals are identical.

The spelling of 133345779 in words is "one hundred thirty-three million, three hundred forty-five thousand, seven hundred seventy-nine".