154884469 has 2 divisors, whose sum is σ = 154884470. Its totient is φ = 154884468.

The previous prime is 154884451. The next prime is 154884473. The reversal of 154884469 is 964488451.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154703844 + 180625 = 12438^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 154884469 - 2⁵ = 154884437 is a prime.

It is a super-2 number, since 2×154884469² = 47978397474823922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154884439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77442234 + 77442235.

It is an arithmetic number, because the mean of its divisors is an integer number (77442235).

Almost surely, 2^154884469 is an apocalyptic number.

It is an amenable number.

154884469 is a deficient number, since it is larger than the sum of its proper divisors (1).

154884469 is an equidigital number, since it uses as much as digits as its factorization.

154884469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 49.

The square root of 154884469 is about 12445.2588964633. The cubic root of 154884469 is about 537.0350407775.

The spelling of 154884469 in words is "one hundred fifty-four million, eight hundred eighty-four thousand, four hundred sixty-nine".