3899892481 has 16 divisors (see below), whose sum is σ = 4188412800. Its totient is φ = 3619893888.

The previous prime is 3899892457. The next prime is 3899892487. The reversal of 3899892481 is 1842989983.

It is a cyclic number.

It is not a de Polignac number, because 3899892481 - 2⁵ = 3899892449 is a prime.

It is a super-2 number, since 2×3899892481² = 30418322726720670722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3899892487) 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, 860740 + ... + 865258.

It is an arithmetic number, because the mean of its divisors is an integer number (261775800).

Almost surely, 2^3899892481 is an apocalyptic number.

It is an amenable number.

3899892481 is a deficient number, since it is larger than the sum of its proper divisors (288520319).

3899892481 is a wasteful number, since it uses less digits than its factorization.

3899892481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448.

The product of its digits is 8957952, while the sum is 61.

The square root of 3899892481 is about 62449.1191371023. The cubic root of 3899892481 is about 1574.0464514168.

The spelling of 3899892481 in words is "three billion, eight hundred ninety-nine million, eight hundred ninety-two thousand, four hundred eighty-one".