133293949 has 4 divisors (see below), whose sum is σ = 140309440. Its totient is φ = 126278460.

The previous prime is 133293931. The next prime is 133293971. The reversal of 133293949 is 949392331.

It is a happy number.

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 133293949 - 2⁵ = 133293917 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 (133293929) 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, 3507717 + ... + 3507754.

It is an arithmetic number, because the mean of its divisors is an integer number (35077360).

Almost surely, 2^133293949 is an apocalyptic number.

133293949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

133293949 is a deficient number, since it is larger than the sum of its proper divisors (7015491).

133293949 is an equidigital number, since it uses as much as digits as its factorization.

133293949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015490.

The product of its digits is 157464, while the sum is 43.

The square root of 133293949 is about 11545.2998661793. The cubic root of 133293949 is about 510.8226489987.

The spelling of 133293949 in words is "one hundred thirty-three million, two hundred ninety-three thousand, nine hundred forty-nine".