7494438877 has 2 divisors, whose sum is σ = 7494438878. Its totient is φ = 7494438876.

The previous prime is 7494438851. The next prime is 7494438901. The reversal of 7494438877 is 7788344947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7490729401 + 3709476 = 86549^2 + 1926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7494438877 is a prime.

It is a super-2 number, since 2×7494438877² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7494438377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3747219438 + 3747219439.

It is an arithmetic number, because the mean of its divisors is an integer number (3747219439).

Almost surely, 2^7494438877 is an apocalyptic number.

It is an amenable number.

7494438877 is a deficient number, since it is larger than the sum of its proper divisors (1).

7494438877 is an equidigital number, since it uses as much as digits as its factorization.

7494438877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37933056, while the sum is 61.

The square root of 7494438877 is about 86570.4272658972. The cubic root of 7494438877 is about 1956.9498996143.

The spelling of 7494438877 in words is "seven billion, four hundred ninety-four million, four hundred thirty-eight thousand, eight hundred seventy-seven".