133976461 has 4 divisors (see below), whose sum is σ = 136827072. Its totient is φ = 131125852.

The previous prime is 133976459. The next prime is 133976501. The reversal of 133976461 is 164679331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133976461 - 2¹ = 133976459 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133976441) 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, 1425235 + ... + 1425328.

It is an arithmetic number, because the mean of its divisors is an integer number (34206768).

Almost surely, 2^133976461 is an apocalyptic number.

It is an amenable number.

133976461 is a deficient number, since it is larger than the sum of its proper divisors (2850611).

133976461 is an equidigital number, since it uses as much as digits as its factorization.

133976461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850610.

The product of its digits is 81648, while the sum is 40.

The square root of 133976461 is about 11574.8201281921. The cubic root of 133976461 is about 511.6930291366.

The spelling of 133976461 in words is "one hundred thirty-three million, nine hundred seventy-six thousand, four hundred sixty-one".