4000448477 has 2 divisors, whose sum is σ = 4000448478. Its totient is φ = 4000448476.

The previous prime is 4000448437. The next prime is 4000448497. The reversal of 4000448477 is 7748440004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3157765636 + 842682841 = 56194^2 + 29029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4000448477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4000448477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4000448407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000224238 + 2000224239.

It is an arithmetic number, because the mean of its divisors is an integer number (2000224239).

Almost surely, 2^4000448477 is an apocalyptic number.

It is an amenable number.

4000448477 is a deficient number, since it is larger than the sum of its proper divisors (1).

4000448477 is an equidigital number, since it uses as much as digits as its factorization.

4000448477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 38.

The square root of 4000448477 is about 63249.0986259883. The cubic root of 4000448477 is about 1587.4603758229.

The spelling of 4000448477 in words is "four billion, four hundred forty-eight thousand, four hundred seventy-seven".