144999401 has 2 divisors, whose sum is σ = 144999402. Its totient is φ = 144999400.

The previous prime is 144999373. The next prime is 144999419. The reversal of 144999401 is 104999441.

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., 138674176 + 6325225 = 11776^2 + 2515^2 .

It is a cyclic number.

It is not a de Polignac number, because 144999401 - 2¹⁴ = 144983017 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (144999451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72499700 + 72499701.

It is an arithmetic number, because the mean of its divisors is an integer number (72499701).

Almost surely, 2^144999401 is an apocalyptic number.

It is an amenable number.

144999401 is a deficient number, since it is larger than the sum of its proper divisors (1).

144999401 is an equidigital number, since it uses as much as digits as its factorization.

144999401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 144999401 is about 12041.5697066454. The cubic root of 144999401 is about 525.3580638232.

The spelling of 144999401 in words is "one hundred forty-four million, nine hundred ninety-nine thousand, four hundred one".