133861449 has 16 divisors (see below), whose sum is σ = 191279232. Its totient is φ = 83052288.

The previous prime is 133861447. The next prime is 133861459. The reversal of 133861449 is 944168331.

It is not a de Polignac number, because 133861449 - 2¹ = 133861447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133861447) 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, 23664 + ... + 28769.

It is an arithmetic number, because the mean of its divisors is an integer number (11954952).

Almost surely, 2^133861449 is an apocalyptic number.

It is an amenable number.

133861449 is a deficient number, since it is larger than the sum of its proper divisors (57417783).

133861449 is a wasteful number, since it uses less digits than its factorization.

133861449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52496.

The product of its digits is 62208, while the sum is 39.

The square root of 133861449 is about 11569.8508633431. The cubic root of 133861449 is about 511.5465663763.

The spelling of 133861449 in words is "one hundred thirty-three million, eight hundred sixty-one thousand, four hundred forty-nine".