4138690 has 8 divisors (see below), whose sum is σ = 7449660. Its totient is φ = 1655472.

The previous prime is 4138681. The next prime is 4138691. The reversal of 4138690 is 968314.

It can be written as a sum of positive squares in 2 ways, for example, as 4004001 + 134689 = 2001^2 + 367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4138690² = 34257509832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4138691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206925 + ... + 206944.

Almost surely, 2^4138690 is an apocalyptic number.

4138690 is a deficient number, since it is larger than the sum of its proper divisors (3310970).

4138690 is a wasteful number, since it uses less digits than its factorization.

4138690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413876.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 4138690 is about 2034.3770545305. The cubic root of 4138690 is about 160.5539393567.

The spelling of 4138690 in words is "four million, one hundred thirty-eight thousand, six hundred ninety".