144697499 has 2 divisors, whose sum is σ = 144697500. Its totient is φ = 144697498.

The previous prime is 144697481. The next prime is 144697513. The reversal of 144697499 is 994796441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144697499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144697499.

It is not a weakly prime, because it can be changed into another prime (144697409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72348749 + 72348750.

It is an arithmetic number, because the mean of its divisors is an integer number (72348750).

Almost surely, 2^144697499 is an apocalyptic number.

144697499 is a deficient number, since it is larger than the sum of its proper divisors (1).

144697499 is an equidigital number, since it uses as much as digits as its factorization.

144697499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 53.

The square root of 144697499 is about 12029.0273505384. The cubic root of 144697499 is about 524.9931959814.

The spelling of 144697499 in words is "one hundred forty-four million, six hundred ninety-seven thousand, four hundred ninety-nine".