4138664 has 32 divisors (see below), whose sum is σ = 8125920. Its totient is φ = 1974336.

The previous prime is 4138649. The next prime is 4138681. The reversal of 4138664 is 4668314.

4138664 = T₁₄₄ + T₁₄₅ + ... + T₃₀₂.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 4138664.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18119 + ... + 18345.

It is an arithmetic number, because the mean of its divisors is an integer number (253935).

Almost surely, 2^4138664 is an apocalyptic number.

It is an amenable number.

4138664 is a deficient number, since it is larger than the sum of its proper divisors (3987256).

4138664 is a wasteful number, since it uses less digits than its factorization.

4138664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 325 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 4138664 is about 2034.3706643579. The cubic root of 4138664 is about 160.5536031464.

The spelling of 4138664 in words is "four million, one hundred thirty-eight thousand, six hundred sixty-four".