4397912561 has 8 divisors (see below), whose sum is σ = 5026641984. Its totient is φ = 3769297200.

The previous prime is 4397912551. The next prime is 4397912567. The reversal of 4397912561 is 1652197934.

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

It is a cyclic number.

It is not a de Polignac number, because 4397912561 - 2¹⁸ = 4397650417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4397912567) 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, 83411 + ... + 125511.

It is an arithmetic number, because the mean of its divisors is an integer number (628330248).

Almost surely, 2^4397912561 is an apocalyptic number.

It is an amenable number.

4397912561 is a deficient number, since it is larger than the sum of its proper divisors (628729423).

4397912561 is a wasteful number, since it uses less digits than its factorization.

4397912561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57031.

The product of its digits is 408240, while the sum is 47.

The square root of 4397912561 is about 66316.7592769731. The cubic root of 4397912561 is about 1638.3833663970.

The spelling of 4397912561 in words is "four billion, three hundred ninety-seven million, nine hundred twelve thousand, five hundred sixty-one".