1442478997 has 2 divisors, whose sum is σ = 1442478998. Its totient is φ = 1442478996.

The previous prime is 1442478941. The next prime is 1442479117. The reversal of 1442478997 is 7998742441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1199306161 + 243172836 = 34631^2 + 15594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442478997 is a prime.

It is a super-2 number, since 2×1442478997² = 4161491313572252018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442478397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721239498 + 721239499.

It is an arithmetic number, because the mean of its divisors is an integer number (721239499).

Almost surely, 2^1442478997 is an apocalyptic number.

It is an amenable number.

1442478997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442478997 is an equidigital number, since it uses as much as digits as its factorization.

1442478997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 55.

The square root of 1442478997 is about 37979.9815297480. The cubic root of 1442478997 is about 1129.8908702401.

The spelling of 1442478997 in words is "one billion, four hundred forty-two million, four hundred seventy-eight thousand, nine hundred ninety-seven".