133477983 has 16 divisors (see below), whose sum is σ = 208153600. Its totient is φ = 84301560.

The previous prime is 133477963. The next prime is 133477991. The reversal of 133477983 is 389774331.

It is not a de Polignac number, because 133477983 - 2⁵ = 133477951 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 (133477913) 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 15 ways as a sum of consecutive naturals, for example, 129583 + ... + 130608.

It is an arithmetic number, because the mean of its divisors is an integer number (13009600).

Almost surely, 2^133477983 is an apocalyptic number.

133477983 is a deficient number, since it is larger than the sum of its proper divisors (74675617).

133477983 is a wasteful number, since it uses less digits than its factorization.

133477983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260219 (or 260213 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 133477983 is about 11553.2672002339. The cubic root of 133477983 is about 511.0576321680.

The spelling of 133477983 in words is "one hundred thirty-three million, four hundred seventy-seven thousand, nine hundred eighty-three".