133339783 has 4 divisors (see below), whose sum is σ = 134634448. Its totient is φ = 132045120.

The previous prime is 133339769. The next prime is 133339807. The reversal of 133339783 is 387933331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 387933331 = 3637 ⋅106663.

It is a cyclic number.

It is not a de Polignac number, because 133339783 - 2¹³ = 133331591 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 (133339733) 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, 647178 + ... + 647383.

It is an arithmetic number, because the mean of its divisors is an integer number (33658612).

Almost surely, 2^133339783 is an apocalyptic number.

133339783 is a deficient number, since it is larger than the sum of its proper divisors (1294665).

133339783 is a wasteful number, since it uses less digits than its factorization.

133339783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294664.

The product of its digits is 122472, while the sum is 40.

The square root of 133339783 is about 11547.2846591742. The cubic root of 133339783 is about 510.8811921969.

The spelling of 133339783 in words is "one hundred thirty-three million, three hundred thirty-nine thousand, seven hundred eighty-three".