133739933 has 4 divisors (see below), whose sum is σ = 136850208. Its totient is φ = 130629660.

The previous prime is 133739911. The next prime is 133739939. The reversal of 133739933 is 339937331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 339937331 = 331 ⋅1027001.

It is a cyclic number.

It is not a de Polignac number, because 133739933 - 2¹⁴ = 133723549 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 (133739939) 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, 1555073 + ... + 1555158.

It is an arithmetic number, because the mean of its divisors is an integer number (34212552).

Almost surely, 2^133739933 is an apocalyptic number.

It is an amenable number.

133739933 is a deficient number, since it is larger than the sum of its proper divisors (3110275).

133739933 is an equidigital number, since it uses as much as digits as its factorization.

133739933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110274.

The product of its digits is 137781, while the sum is 41.

The square root of 133739933 is about 11564.5982636666. The cubic root of 133739933 is about 511.3917298845.

The spelling of 133739933 in words is "one hundred thirty-three million, seven hundred thirty-nine thousand, nine hundred thirty-three".