945377221 has 16 divisors (see below), whose sum is σ = 984029760. Its totient is φ = 907562880.

The previous prime is 945377219. The next prime is 945377239. The reversal of 945377221 is 122773549.

It is not a de Polignac number, because 945377221 - 2¹ = 945377219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945377201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1289371 + ... + 1290103.

It is an arithmetic number, because the mean of its divisors is an integer number (61501860).

Almost surely, 2^945377221 is an apocalyptic number.

It is an amenable number.

945377221 is a deficient number, since it is larger than the sum of its proper divisors (38652539).

945377221 is a wasteful number, since it uses less digits than its factorization.

945377221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236.

The product of its digits is 105840, while the sum is 40.

The square root of 945377221 is about 30746.9871857390. The cubic root of 945377221 is about 981.4504486924.

The spelling of 945377221 in words is "nine hundred forty-five million, three hundred seventy-seven thousand, two hundred twenty-one".