133672849 has 4 divisors (see below), whose sum is σ = 139484736. Its totient is φ = 127860964.

The previous prime is 133672843. The next prime is 133672859. The reversal of 133672849 is 948276331.

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 133672849 - 2¹⁷ = 133541777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133672843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905909 + ... + 2905954.

It is an arithmetic number, because the mean of its divisors is an integer number (34871184).

Almost surely, 2^133672849 is an apocalyptic number.

It is an amenable number.

133672849 is a deficient number, since it is larger than the sum of its proper divisors (5811887).

133672849 is an equidigital number, since it uses as much as digits as its factorization.

133672849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5811886.

The product of its digits is 217728, while the sum is 43.

The square root of 133672849 is about 11561.6974964752. The cubic root of 133672849 is about 511.3062108236.

The spelling of 133672849 in words is "one hundred thirty-three million, six hundred seventy-two thousand, eight hundred forty-nine".