133446977 has 4 divisors (see below), whose sum is σ = 133612740. Its totient is φ = 133281216.

The previous prime is 133446961. The next prime is 133446983. The reversal of 133446977 is 779644331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92179201 + 41267776 = 9601^2 + 6424^2 .

It is a cyclic number.

It is not a de Polignac number, because 133446977 - 2⁴ = 133446961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133446947) 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, 81668 + ... + 83285.

It is an arithmetic number, because the mean of its divisors is an integer number (33403185).

Almost surely, 2^133446977 is an apocalyptic number.

It is an amenable number.

133446977 is a deficient number, since it is larger than the sum of its proper divisors (165763).

133446977 is an equidigital number, since it uses as much as digits as its factorization.

133446977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165762.

The product of its digits is 381024, while the sum is 44.

The square root of 133446977 is about 11551.9252507969. The cubic root of 133446977 is about 511.0180574014.

The spelling of 133446977 in words is "one hundred thirty-three million, four hundred forty-six thousand, nine hundred seventy-seven".