4395699981 has 20 divisors (see below), whose sum is σ = 6590155132. Its totient is φ = 2919872448.

The previous prime is 4395699967. The next prime is 4395700009. The reversal of 4395699981 is 1899965934.

It can be written as a sum of positive squares in 2 ways, for example, as 1000773225 + 3394926756 = 31635^2 + 58266^2 .

It is not a de Polignac number, because 4395699981 - 2²⁶ = 4328591117 is a prime.

It is a super-2 number, since 2×4395699981² = 38644356645926800722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4395699181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 75520 + ... + 120393.

Almost surely, 2^4395699981 is an apocalyptic number.

It is an amenable number.

4395699981 is a deficient number, since it is larger than the sum of its proper divisors (2194455151).

4395699981 is a wasteful number, since it uses less digits than its factorization.

4395699981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196202 (or 196193 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 63.

The square root of 4395699981 is about 66300.0752714505. The cubic root of 4395699981 is about 1638.1085646354.

The spelling of 4395699981 in words is "four billion, three hundred ninety-five million, six hundred ninety-nine thousand, nine hundred eighty-one".