826900978 has 16 divisors (see below), whose sum is σ = 1316642904. Its totient is φ = 388143360.

The previous prime is 826900969. The next prime is 826900981. The reversal of 826900978 is 879009628.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 743489289 + 83411689 = 27267^2 + 9133^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17133 + ... + 44128.

Almost surely, 2^826900978 is an apocalyptic number.

826900978 is a deficient number, since it is larger than the sum of its proper divisors (489741926).

826900978 is a wasteful number, since it uses less digits than its factorization.

826900978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61677.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 826900978 is about 28755.8859713972. The cubic root of 826900978 is about 938.6085410928.

The spelling of 826900978 in words is "eight hundred twenty-six million, nine hundred thousand, nine hundred seventy-eight".