978450722 has 4 divisors (see below), whose sum is σ = 1467676086. Its totient is φ = 489225360.

The previous prime is 978450721. The next prime is 978450761. The reversal of 978450722 is 227054879.

978450722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227054879 = 191 ⋅1188769.

It can be written as a sum of positive squares in only one way, i.e., 865006921 + 113443801 = 29411^2 + 10651^2 .

It is not an unprimeable number, because it can be changed into a prime (978450721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244612679 + ... + 244612682.

Almost surely, 2^978450722 is an apocalyptic number.

978450722 is a deficient number, since it is larger than the sum of its proper divisors (489225364).

978450722 is a wasteful number, since it uses less digits than its factorization.

978450722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489225363.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 978450722 is about 31280.1969622955. The cubic root of 978450722 is about 992.7646837884.

It can be divided in two parts, 9784 and 50722, that added together give a palindrome (60506).

The spelling of 978450722 in words is "nine hundred seventy-eight million, four hundred fifty thousand, seven hundred twenty-two".