146844449 has 2 divisors, whose sum is σ = 146844450. Its totient is φ = 146844448.

The previous prime is 146844431. The next prime is 146844457. The reversal of 146844449 is 944448641.

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., 85692049 + 61152400 = 9257^2 + 7820^2 .

It is an emirp because it is prime and its reverse (944448641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146844449 - 2¹⁶ = 146778913 is a prime.

It is a super-2 number, since 2×146844449² = 43126584404227202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146844469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73422224 + 73422225.

It is an arithmetic number, because the mean of its divisors is an integer number (73422225).

Almost surely, 2^146844449 is an apocalyptic number.

It is an amenable number.

146844449 is a deficient number, since it is larger than the sum of its proper divisors (1).

146844449 is an equidigital number, since it uses as much as digits as its factorization.

146844449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 442368, while the sum is 44.

The square root of 146844449 is about 12117.9391399693. The cubic root of 146844449 is about 527.5769886806.

The spelling of 146844449 in words is "one hundred forty-six million, eight hundred forty-four thousand, four hundred forty-nine".