445775977 has 2 divisors, whose sum is σ = 445775978. Its totient is φ = 445775976.

The previous prime is 445775947. The next prime is 445776007. The reversal of 445775977 is 779577544.

It is a balanced prime because it is at equal distance from previous prime (445775947) and next prime (445776007).

It can be written as a sum of positive squares in only one way, i.e., 426670336 + 19105641 = 20656^2 + 4371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445775977 is a prime.

It is not a weakly prime, because it can be changed into another prime (445775927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222887988 + 222887989.

It is an arithmetic number, because the mean of its divisors is an integer number (222887989).

Almost surely, 2^445775977 is an apocalyptic number.

It is an amenable number.

445775977 is a deficient number, since it is larger than the sum of its proper divisors (1).

445775977 is an equidigital number, since it uses as much as digits as its factorization.

445775977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8643600, while the sum is 55.

The square root of 445775977 is about 21113.4075174994. The cubic root of 445775977 is about 763.9041806907.

The spelling of 445775977 in words is "four hundred forty-five million, seven hundred seventy-five thousand, nine hundred seventy-seven".