133392869 has 4 divisors (see below), whose sum is σ = 135000096. Its totient is φ = 131785644.

The previous prime is 133392859. The next prime is 133392871. The reversal of 133392869 is 968293331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 968293331 = 1447 ⋅669173.

It is a cyclic number.

It is not a de Polignac number, because 133392869 - 2⁸ = 133392613 is a prime.

It is a super-2 number, since 2×133392869² = 35587315000102322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133392859) 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, 803489 + ... + 803654.

It is an arithmetic number, because the mean of its divisors is an integer number (33750024).

Almost surely, 2^133392869 is an apocalyptic number.

It is an amenable number.

133392869 is a deficient number, since it is larger than the sum of its proper divisors (1607227).

133392869 is an equidigital number, since it uses as much as digits as its factorization.

133392869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607226.

The product of its digits is 209952, while the sum is 44.

The square root of 133392869 is about 11549.5830660678. The cubic root of 133392869 is about 510.9489815193.

The spelling of 133392869 in words is "one hundred thirty-three million, three hundred ninety-two thousand, eight hundred sixty-nine".