4138493 has 4 divisors (see below), whose sum is σ = 4151328. Its totient is φ = 4125660.

The previous prime is 4138489. The next prime is 4138507. The reversal of 4138493 is 3948314.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4138493 - 2² = 4138489 is a prime.

It is a super-2 number, since 2×4138493² = 34254248622098, 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 (4138483) 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, 5921 + ... + 6582.

It is an arithmetic number, because the mean of its divisors is an integer number (1037832).

Almost surely, 2^4138493 is an apocalyptic number.

It is an amenable number.

4138493 is a deficient number, since it is larger than the sum of its proper divisors (12835).

4138493 is a wasteful number, since it uses less digits than its factorization.

4138493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12834.

The product of its digits is 10368, while the sum is 32.

The square root of 4138493 is about 2034.3286361844. The cubic root of 4138493 is about 160.5513918817.

The spelling of 4138493 in words is "four million, one hundred thirty-eight thousand, four hundred ninety-three".