402224445 has 24 divisors (see below), whose sum is σ = 796788096. Its totient is φ = 183873888.

The previous prime is 402224441. The next prime is 402224477. The reversal of 402224445 is 544422204.

It is not a de Polignac number, because 402224445 - 2² = 402224441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402224441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 638137 + ... + 638766.

It is an arithmetic number, because the mean of its divisors is an integer number (33199504).

Almost surely, 2^402224445 is an apocalyptic number.

402224445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402224445 is a deficient number, since it is larger than the sum of its proper divisors (394563651).

402224445 is a wasteful number, since it uses less digits than its factorization.

402224445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276921 (or 1276918 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 402224445 is about 20055.5340243036. The cubic root of 402224445 is about 738.1695966012.

Adding to 402224445 its reverse (544422204), we get a palindrome (946646649).

The spelling of 402224445 in words is "four hundred two million, two hundred twenty-four thousand, four hundred forty-five".