133400413 has 4 divisors (see below), whose sum is σ = 134624380. Its totient is φ = 132176448.

The previous prime is 133400381. The next prime is 133400441. The reversal of 133400413 is 314004331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314004331 = 17 ⋅18470843.

It can be written as a sum of positive squares in 2 ways, for example, as 117223929 + 16176484 = 10827^2 + 4022^2 .

It is a cyclic number.

It is not a de Polignac number, because 133400413 - 2⁵ = 133400381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133400453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611820 + ... + 612037.

It is an arithmetic number, because the mean of its divisors is an integer number (33656095).

Almost surely, 2^133400413 is an apocalyptic number.

It is an amenable number.

133400413 is a deficient number, since it is larger than the sum of its proper divisors (1223967).

133400413 is a wasteful number, since it uses less digits than its factorization.

133400413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223966.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 133400413 is about 11549.9096533263. The cubic root of 133400413 is about 510.9586135346.

Adding to 133400413 its reverse (314004331), we get a palindrome (447404744).

The spelling of 133400413 in words is "one hundred thirty-three million, four hundred thousand, four hundred thirteen".