3990678267 has 16 divisors (see below), whose sum is σ = 5513951232. Its totient is φ = 2564597760.

The previous prime is 3990678239. The next prime is 3990678269. The reversal of 3990678267 is 7628760993.

It is a happy number.

It is not a de Polignac number, because 3990678267 - 2¹⁸ = 3990416123 is a prime.

It is a super-2 number, since 2×3990678267² = 31851026061412246578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3990678269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59583 + ... + 107384.

It is an arithmetic number, because the mean of its divisors is an integer number (344621952).

Almost surely, 2^3990678267 is an apocalyptic number.

3990678267 is a deficient number, since it is larger than the sum of its proper divisors (1523272965).

3990678267 is a wasteful number, since it uses less digits than its factorization.

3990678267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167258.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The square root of 3990678267 is about 63171.8154480303. The cubic root of 3990678267 is about 1586.1669821012.

The spelling of 3990678267 in words is "three billion, nine hundred ninety million, six hundred seventy-eight thousand, two hundred sixty-seven".