154449413 has 2 divisors, whose sum is σ = 154449414. Its totient is φ = 154449412.

The previous prime is 154449401. The next prime is 154449431. The reversal of 154449413 is 314944451.

Together with next prime (154449431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84676804 + 69772609 = 9202^2 + 8353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154449413 is a prime.

It is a Chen prime.

It is equal to p_8680346 and since 154449413 and 8680346 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154409413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77224706 + 77224707.

It is an arithmetic number, because the mean of its divisors is an integer number (77224707).

Almost surely, 2^154449413 is an apocalyptic number.

It is an amenable number.

154449413 is a deficient number, since it is larger than the sum of its proper divisors (1).

154449413 is an equidigital number, since it uses as much as digits as its factorization.

154449413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 154449413 is about 12427.7678204897. The cubic root of 154449413 is about 536.5317421615.

The spelling of 154449413 in words is "one hundred fifty-four million, four hundred forty-nine thousand, four hundred thirteen".