4139431 has 8 divisors (see below), whose sum is σ = 4374720. Its totient is φ = 3910368.

The previous prime is 4139423. The next prime is 4139477. The reversal of 4139431 is 1349314.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4139431 - 2³ = 4139423 is a prime.

It is a super-2 number, since 2×4139431² = 34269778007522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4139396 and 4139405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4139491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156 + ... + 2881.

It is an arithmetic number, because the mean of its divisors is an integer number (546840).

Almost surely, 2^4139431 is an apocalyptic number.

4139431 is a deficient number, since it is larger than the sum of its proper divisors (235289).

4139431 is a wasteful number, since it uses less digits than its factorization.

4139431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113.

The product of its digits is 1296, while the sum is 25.

The square root of 4139431 is about 2034.5591660112. The cubic root of 4139431 is about 160.5635207596.

The spelling of 4139431 in words is "four million, one hundred thirty-nine thousand, four hundred thirty-one".