4394115481 has 4 divisors (see below), whose sum is σ = 5021846272. Its totient is φ = 3766384692.

The previous prime is 4394115469. The next prime is 4394115527. The reversal of 4394115481 is 1845114934.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4394115481 - 2²¹ = 4392018329 is a prime.

It is a super-2 number, since 2×4394115481² = 38616501720727722722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4394115421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313865385 + ... + 313865398.

It is an arithmetic number, because the mean of its divisors is an integer number (1255461568).

Almost surely, 2^4394115481 is an apocalyptic number.

It is an amenable number.

4394115481 is a deficient number, since it is larger than the sum of its proper divisors (627730791).

4394115481 is an equidigital number, since it uses as much as digits as its factorization.

4394115481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627730790.

The product of its digits is 69120, while the sum is 40.

The square root of 4394115481 is about 66288.1247358831. The cubic root of 4394115481 is about 1637.9117135486.

The spelling of 4394115481 in words is "four billion, three hundred ninety-four million, one hundred fifteen thousand, four hundred eighty-one".