144161997 has 16 divisors (see below), whose sum is σ = 226762752. Its totient is φ = 79720560.

The previous prime is 144161977. The next prime is 144162001. The reversal of 144161997 is 799161441.

It is not a de Polignac number, because 144161997 - 2⁷ = 144161869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144161947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110073 + ... + 111374.

It is an arithmetic number, because the mean of its divisors is an integer number (14172672).

Almost surely, 2^144161997 is an apocalyptic number.

It is an amenable number.

144161997 is a deficient number, since it is larger than the sum of its proper divisors (82600755).

144161997 is a wasteful number, since it uses less digits than its factorization.

144161997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221488.

The product of its digits is 54432, while the sum is 42.

The square root of 144161997 is about 12006.7479776999. The cubic root of 144161997 is about 524.3447571468.

The spelling of 144161997 in words is "one hundred forty-four million, one hundred sixty-one thousand, nine hundred ninety-seven".