144394047 has 24 divisors (see below), whose sum is σ = 240254976. Its totient is φ = 81856656.

The previous prime is 144394037. The next prime is 144394057. The reversal of 144394047 is 740493441.

It is an interprime number because it is at equal distance from previous prime (144394037) and next prime (144394057).

It is not a de Polignac number, because 144394047 - 2⁴ = 144394031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144394037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1023 + ... + 17024.

It is an arithmetic number, because the mean of its divisors is an integer number (10010624).

Almost surely, 2^144394047 is an apocalyptic number.

144394047 is a deficient number, since it is larger than the sum of its proper divisors (95860929).

144394047 is a wasteful number, since it uses less digits than its factorization.

144394047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18187 (or 18184 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 144394047 is about 12016.4074082065. The cubic root of 144394047 is about 524.6259430755.

The spelling of 144394047 in words is "one hundred forty-four million, three hundred ninety-four thousand, forty-seven".