945221877 has 6 divisors (see below), whose sum is σ = 1365320502. Its totient is φ = 630147912.

The previous prime is 945221839. The next prime is 945221881. The reversal of 945221877 is 778122549.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 943165521 + 2056356 = 30711^2 + 1434^2 .

It is not a de Polignac number, because 945221877 - 2¹⁰ = 945220853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945221377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52512318 + ... + 52512335.

It is an arithmetic number, because the mean of its divisors is an integer number (227553417).

Almost surely, 2^945221877 is an apocalyptic number.

It is an amenable number.

945221877 is a deficient number, since it is larger than the sum of its proper divisors (420098625).

945221877 is a wasteful number, since it uses less digits than its factorization.

945221877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105024659 (or 105024656 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 945221877 is about 30744.4609157487. The cubic root of 945221877 is about 981.3966885683.

It can be divided in two parts, 9452 and 21877, that added together give a square (31329 = 177²).

The spelling of 945221877 in words is "nine hundred forty-five million, two hundred twenty-one thousand, eight hundred seventy-seven".