438983999977 has 2 divisors, whose sum is σ = 438983999978. Its totient is φ = 438983999976.

The previous prime is 438983999953. The next prime is 438984000017. The reversal of 438983999977 is 779999389834.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333755776656 + 105228223321 = 577716^2 + 324389^2 .

It is a cyclic number.

It is not a de Polignac number, because 438983999977 - 2¹¹ = 438983997929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438983999894 and 438983999903.

It is not a weakly prime, because it can be changed into another prime (438983999917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219491999988 + 219491999989.

It is an arithmetic number, because the mean of its divisors is an integer number (219491999989).

Almost surely, 2^438983999977 is an apocalyptic number.

It is an amenable number.

438983999977 is a deficient number, since it is larger than the sum of its proper divisors (1).

438983999977 is an equidigital number, since it uses as much as digits as its factorization.

438983999977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6666395904, while the sum is 85.

The spelling of 438983999977 in words is "four hundred thirty-eight billion, nine hundred eighty-three million, nine hundred ninety-nine thousand, nine hundred seventy-seven".