133694473 has 6 divisors (see below), whose sum is σ = 146953562. Its totient is φ = 121540320.

The previous prime is 133694471. The next prime is 133694479. The reversal of 133694473 is 374496331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 97357689 + 36336784 = 9867^2 + 6028^2 .

It is not a de Polignac number, because 133694473 - 2¹ = 133694471 is a prime.

It is a super-2 number, since 2×133694473² = 35748424221495458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133694471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552336 + ... + 552577.

Almost surely, 2^133694473 is an apocalyptic number.

It is an amenable number.

133694473 is a deficient number, since it is larger than the sum of its proper divisors (13259089).

133694473 is a wasteful number, since it uses less digits than its factorization.

133694473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104935 (or 1104924 counting only the distinct ones).

The product of its digits is 163296, while the sum is 40.

The square root of 133694473 is about 11562.6326154557. The cubic root of 133694473 is about 511.3337803449. Note that the first 3 decimals are identical.

The spelling of 133694473 in words is "one hundred thirty-three million, six hundred ninety-four thousand, four hundred seventy-three".