133498747 has 4 divisors (see below), whose sum is σ = 136754856. Its totient is φ = 130242640.

The previous prime is 133498733. The next prime is 133498763. The reversal of 133498747 is 747894331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 747894331 = 7213 ⋅103687.

It is a cyclic number.

It is not a de Polignac number, because 133498747 - 2⁷ = 133498619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133498697 and 133498706.

It is not an unprimeable number, because it can be changed into a prime (133498787) 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, 1627993 + ... + 1628074.

It is an arithmetic number, because the mean of its divisors is an integer number (34188714).

Almost surely, 2^133498747 is an apocalyptic number.

133498747 is a deficient number, since it is larger than the sum of its proper divisors (3256109).

133498747 is an equidigital number, since it uses as much as digits as its factorization.

133498747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256108.

The product of its digits is 508032, while the sum is 46.

The square root of 133498747 is about 11554.1657855511. The cubic root of 133498747 is about 511.0841310462.

The spelling of 133498747 in words is "one hundred thirty-three million, four hundred ninety-eight thousand, seven hundred forty-seven".