7912440901 has 2 divisors, whose sum is σ = 7912440902. Its totient is φ = 7912440900.

The previous prime is 7912440871. The next prime is 7912440931. The reversal of 7912440901 is 1090442197.

It is a balanced prime because it is at equal distance from previous prime (7912440871) and next prime (7912440931).

It can be written as a sum of positive squares in only one way, i.e., 5351068801 + 2561372100 = 73151^2 + 50610^2 .

It is a cyclic number.

It is not a de Polignac number, because 7912440901 - 2⁵ = 7912440869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7912440931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3956220450 + 3956220451.

It is an arithmetic number, because the mean of its divisors is an integer number (3956220451).

Almost surely, 2^7912440901 is an apocalyptic number.

7912440901 is the 39781-st centered decagonal number.

It is an amenable number.

7912440901 is a deficient number, since it is larger than the sum of its proper divisors (1).

7912440901 is an equidigital number, since it uses as much as digits as its factorization.

7912440901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7912440901 is about 88951.9021775251. The cubic root of 7912440901 is about 1992.6766252382.

The spelling of 7912440901 in words is "seven billion, nine hundred twelve million, four hundred forty thousand, nine hundred one".