144693898 has 4 divisors (see below), whose sum is σ = 217040850. Its totient is φ = 72346948.

The previous prime is 144693893. The next prime is 144693907. The reversal of 144693898 is 898396441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898396441 = 71 ⋅12653471.

It can be written as a sum of positive squares in only one way, i.e., 138227049 + 6466849 = 11757^2 + 2543^2 .

It is not an unprimeable number, because it can be changed into a prime (144693893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36173473 + ... + 36173476.

Almost surely, 2^144693898 is an apocalyptic number.

144693898 is a deficient number, since it is larger than the sum of its proper divisors (72346952).

144693898 is an equidigital number, since it uses as much as digits as its factorization.

144693898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72346951.

The product of its digits is 1492992, while the sum is 52.

The square root of 144693898 is about 12028.8776700073. The cubic root of 144693898 is about 524.9888408815.

The spelling of 144693898 in words is "one hundred forty-four million, six hundred ninety-three thousand, eight hundred ninety-eight".