4391396261 has 16 divisors (see below), whose sum is σ = 5395292160. Its totient is φ = 3490069680.

The previous prime is 4391396257. The next prime is 4391396263. The reversal of 4391396261 is 1626931934.

It is a cyclic number.

It is not a de Polignac number, because 4391396261 - 2² = 4391396257 is a prime.

It is a super-2 number, since 2×4391396261² = 38568722242249560242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391396263) 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, 345005 + ... + 357506.

It is an arithmetic number, because the mean of its divisors is an integer number (337205760).

Almost surely, 2^4391396261 is an apocalyptic number.

It is an amenable number.

4391396261 is a deficient number, since it is larger than the sum of its proper divisors (1003895899).

4391396261 is a wasteful number, since it uses less digits than its factorization.

4391396261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702584.

The product of its digits is 209952, while the sum is 44.

The square root of 4391396261 is about 66267.6109498449. The cubic root of 4391396261 is about 1637.5737796798.

The spelling of 4391396261 in words is "four billion, three hundred ninety-one million, three hundred ninety-six thousand, two hundred sixty-one".