7900389047 has 2 divisors, whose sum is σ = 7900389048. Its totient is φ = 7900389046.

The previous prime is 7900388981. The next prime is 7900389089. The reversal of 7900389047 is 7409830097.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7900389047 - 2¹⁶ = 7900323511 is a prime.

It is a super-2 number, since 2×7900389047² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7900388992 and 7900389010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7900389247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3950194523 + 3950194524.

It is an arithmetic number, because the mean of its divisors is an integer number (3950194524).

Almost surely, 2^7900389047 is an apocalyptic number.

7900389047 is a deficient number, since it is larger than the sum of its proper divisors (1).

7900389047 is an equidigital number, since it uses as much as digits as its factorization.

7900389047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 7900389047 is about 88884.1327065748. The cubic root of 7900389047 is about 1991.6643943540.

The spelling of 7900389047 in words is "seven billion, nine hundred million, three hundred eighty-nine thousand, forty-seven".