4012531999 has 16 divisors (see below), whose sum is σ = 4788149760. Its totient is φ = 3287702880.

The previous prime is 4012531969. The next prime is 4012532009. The reversal of 4012531999 is 9991352104.

It is not a de Polignac number, because 4012531999 - 2¹¹ = 4012529951 is a prime.

It is a super-2 number, since 2×4012531999² = 32200826085997872002, 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 (4012531949) 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, 281064 + ... + 294994.

It is an arithmetic number, because the mean of its divisors is an integer number (299259360).

Almost surely, 2^4012531999 is an apocalyptic number.

4012531999 is a deficient number, since it is larger than the sum of its proper divisors (775617761).

4012531999 is a wasteful number, since it uses less digits than its factorization.

4012531999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15750.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 4012531999 is about 63344.5498760548. The cubic root of 4012531999 is about 1589.0570994047.

The spelling of 4012531999 in words is "four billion, twelve million, five hundred thirty-one thousand, nine hundred ninety-nine".