4247066391 has 8 divisors (see below), whose sum is σ = 5663257344. Its totient is φ = 2831126520.

The previous prime is 4247066387. The next prime is 4247066399. The reversal of 4247066391 is 1936607424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4247066391 - 2² = 4247066387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4247066399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18925 + ... + 94086.

It is an arithmetic number, because the mean of its divisors is an integer number (707907168).

Almost surely, 2^4247066391 is an apocalyptic number.

4247066391 is a deficient number, since it is larger than the sum of its proper divisors (1416190953).

4247066391 is a wasteful number, since it uses less digits than its factorization.

4247066391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125541.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 4247066391 is about 65169.5204140709. The cubic root of 4247066391 is about 1619.4331186048.

The spelling of 4247066391 in words is "four billion, two hundred forty-seven million, sixty-six thousand, three hundred ninety-one".