133879249 has 16 divisors (see below), whose sum is σ = 156119040. Its totient is φ = 112441680.

The previous prime is 133879247. The next prime is 133879261. The reversal of 133879249 is 942978331.

It is a cyclic number.

It is not a de Polignac number, because 133879249 - 2¹ = 133879247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133879199 and 133879208.

It is not an unprimeable number, because it can be changed into a prime (133879241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75232 + ... + 76990.

It is an arithmetic number, because the mean of its divisors is an integer number (9757440).

Almost surely, 2^133879249 is an apocalyptic number.

It is an amenable number.

133879249 is a deficient number, since it is larger than the sum of its proper divisors (22239791).

133879249 is a wasteful number, since it uses less digits than its factorization.

133879249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980.

The product of its digits is 326592, while the sum is 46.

The square root of 133879249 is about 11570.6200784573. The cubic root of 133879249 is about 511.5692393848.

The spelling of 133879249 in words is "one hundred thirty-three million, eight hundred seventy-nine thousand, two hundred forty-nine".