133840949 has 8 divisors (see below), whose sum is σ = 154597248. Its totient is φ = 114516160.

The previous prime is 133840943. The next prime is 133840957. The reversal of 133840949 is 949048331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-133840949 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 (133840943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357677 + ... + 358050.

It is an arithmetic number, because the mean of its divisors is an integer number (19324656).

Almost surely, 2^133840949 is an apocalyptic number.

It is an amenable number.

133840949 is a deficient number, since it is larger than the sum of its proper divisors (20756299).

133840949 is a wasteful number, since it uses less digits than its factorization.

133840949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715755.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 133840949 is about 11568.9649061617. The cubic root of 133840949 is about 511.5204517131.

The spelling of 133840949 in words is "one hundred thirty-three million, eight hundred forty thousand, nine hundred forty-nine".