144722997 has 8 divisors (see below), whose sum is σ = 214404480. Its totient is φ = 96481980.

The previous prime is 144722987. The next prime is 144722999. The reversal of 144722997 is 799227441.

It is a happy number.

It is not a de Polignac number, because 144722997 - 2⁷ = 144722869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144722999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2680029 + ... + 2680082.

It is an arithmetic number, because the mean of its divisors is an integer number (26800560).

Almost surely, 2^144722997 is an apocalyptic number.

It is an amenable number.

144722997 is a deficient number, since it is larger than the sum of its proper divisors (69681483).

144722997 is an equidigital number, since it uses as much as digits as its factorization.

144722997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360120 (or 5360114 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 144722997 is about 12030.0871567915. The cubic root of 144722997 is about 525.0240315530.

The spelling of 144722997 in words is "one hundred forty-four million, seven hundred twenty-two thousand, nine hundred ninety-seven".