133028977 has 4 divisors (see below), whose sum is σ = 133986160. Its totient is φ = 132071796.

The previous prime is 133028963. The next prime is 133028981. The reversal of 133028977 is 779820331.

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 133028977 - 2¹⁵ = 132996209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133028957) 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, 478383 + ... + 478660.

It is an arithmetic number, because the mean of its divisors is an integer number (33496540).

Almost surely, 2^133028977 is an apocalyptic number.

It is an amenable number.

133028977 is a deficient number, since it is larger than the sum of its proper divisors (957183).

133028977 is an equidigital number, since it uses as much as digits as its factorization.

133028977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957182.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 133028977 is about 11533.8188385287. The cubic root of 133028977 is about 510.4839402326.

The spelling of 133028977 in words is "one hundred thirty-three million, twenty-eight thousand, nine hundred seventy-seven".