133449419 has 2 divisors, whose sum is σ = 133449420. Its totient is φ = 133449418.

The previous prime is 133449409. The next prime is 133449431. The reversal of 133449419 is 914944331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133449419 is a prime.

It is a super-2 number, since 2×133449419² = 35617494862875122, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_7562639 and since 133449419 and 7562639 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (133449409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66724709 + 66724710.

It is an arithmetic number, because the mean of its divisors is an integer number (66724710).

Almost surely, 2^133449419 is an apocalyptic number.

133449419 is a deficient number, since it is larger than the sum of its proper divisors (1).

133449419 is an equidigital number, since it uses as much as digits as its factorization.

133449419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 133449419 is about 11552.0309469807. The cubic root of 133449419 is about 511.0211744908.

The spelling of 133449419 in words is "one hundred thirty-three million, four hundred forty-nine thousand, four hundred nineteen".