7129389451 has 2 divisors, whose sum is σ = 7129389452. Its totient is φ = 7129389450.

The previous prime is 7129389367. The next prime is 7129389461. The reversal of 7129389451 is 1549839217.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1549839217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7129389451 - 2⁹ = 7129388939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7129389395 and 7129389404.

It is not a weakly prime, because it can be changed into another prime (7129389461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3564694725 + 3564694726.

It is an arithmetic number, because the mean of its divisors is an integer number (3564694726).

Almost surely, 2^7129389451 is an apocalyptic number.

7129389451 is a deficient number, since it is larger than the sum of its proper divisors (1).

7129389451 is an equidigital number, since it uses as much as digits as its factorization.

7129389451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 7129389451 is about 84435.7119410975. The cubic root of 7129389451 is about 1924.6456379030.

The spelling of 7129389451 in words is "seven billion, one hundred twenty-nine million, three hundred eighty-nine thousand, four hundred fifty-one".