3987591706 has 32 divisors (see below), whose sum is σ = 7309688832. Its totient is φ = 1592505600.

The previous prime is 3987591701. The next prime is 3987591781. The reversal of 3987591706 is 6071957893.

It is a super-2 number, since 2×3987591706² = 31801775227519980872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3987591701) 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, 58906 + ... + 106981.

It is an arithmetic number, because the mean of its divisors is an integer number (228427776).

Almost surely, 2^3987591706 is an apocalyptic number.

3987591706 is a deficient number, since it is larger than the sum of its proper divisors (3322097126).

3987591706 is a wasteful number, since it uses less digits than its factorization.

3987591706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166014.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The square root of 3987591706 is about 63147.3808324621. The cubic root of 3987591706 is about 1585.7579401983.

The spelling of 3987591706 in words is "three billion, nine hundred eighty-seven million, five hundred ninety-one thousand, seven hundred six".