4391248431 has 16 divisors (see below), whose sum is σ = 5889106944. Its totient is φ = 2910480384.

The previous prime is 4391248429. The next prime is 4391248439. The reversal of 4391248431 is 1348421934.

It is not a de Polignac number, because 4391248431 - 2¹ = 4391248429 is a prime.

It is a super-2 number, since 2×4391248431² = 38566125565519923522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4391248431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391248439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549295 + ... + 557231.

It is an arithmetic number, because the mean of its divisors is an integer number (368069184).

Almost surely, 2^4391248431 is an apocalyptic number.

4391248431 is a deficient number, since it is larger than the sum of its proper divisors (1497858513).

4391248431 is a wasteful number, since it uses less digits than its factorization.

4391248431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8990.

The product of its digits is 82944, while the sum is 39.

The square root of 4391248431 is about 66266.4955388468. The cubic root of 4391248431 is about 1637.5554039565. Note that the first 3 decimals are identical.

The spelling of 4391248431 in words is "four billion, three hundred ninety-one million, two hundred forty-eight thousand, four hundred thirty-one".