133753399 has 32 divisors (see below), whose sum is σ = 158699520. Its totient is φ = 111601152.

The previous prime is 133753387. The next prime is 133753429. The reversal of 133753399 is 993357331.

It is not a de Polignac number, because 133753399 - 2⁷ = 133753271 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 (133753309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 820492 + ... + 820654.

It is an arithmetic number, because the mean of its divisors is an integer number (4959360).

Almost surely, 2^133753399 is an apocalyptic number.

133753399 is a deficient number, since it is larger than the sum of its proper divisors (24946121).

133753399 is a wasteful number, since it uses less digits than its factorization.

133753399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its digits is 229635, while the sum is 43.

The square root of 133753399 is about 11565.1804568714. The cubic root of 133753399 is about 511.4088929705.

The spelling of 133753399 in words is "one hundred thirty-three million, seven hundred fifty-three thousand, three hundred ninety-nine".