8901239447 has 2 divisors, whose sum is σ = 8901239448. Its totient is φ = 8901239446.

The previous prime is 8901239429. The next prime is 8901239509. The reversal of 8901239447 is 7449321098.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8901239447 - 2¹⁴ = 8901223063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8901239647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4450619723 + 4450619724.

It is an arithmetic number, because the mean of its divisors is an integer number (4450619724).

Almost surely, 2^8901239447 is an apocalyptic number.

8901239447 is a deficient number, since it is larger than the sum of its proper divisors (1).

8901239447 is an equidigital number, since it uses as much as digits as its factorization.

8901239447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 8901239447 is about 94346.3801478361. The cubic root of 8901239447 is about 2072.4472946931.

The spelling of 8901239447 in words is "eight billion, nine hundred one million, two hundred thirty-nine thousand, four hundred forty-seven".