7450221392 has 20 divisors (see below), whose sum is σ = 14439263700. Its totient is φ = 3723959808.

The previous prime is 7450221391. The next prime is 7450221421. The reversal of 7450221392 is 2931220547.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3914254096 + 3535967296 = 62564^2 + 59464^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7450221391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17267 + ... + 123282.

It is an arithmetic number, because the mean of its divisors is an integer number (721963185).

Almost surely, 2^7450221392 is an apocalyptic number.

It is an amenable number.

7450221392 is a deficient number, since it is larger than the sum of its proper divisors (6989042308).

7450221392 is a wasteful number, since it uses less digits than its factorization.

7450221392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143870 (or 143864 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 7450221392 is about 86314.6649880540. The cubic root of 7450221392 is about 1953.0936116904.

The spelling of 7450221392 in words is "seven billion, four hundred fifty million, two hundred twenty-one thousand, three hundred ninety-two".