4139501 has 2 divisors, whose sum is σ = 4139502. Its totient is φ = 4139500.

The previous prime is 4139497. The next prime is 4139503. The reversal of 4139501 is 1059314.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3648100 + 491401 = 1910^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 4139501 - 2² = 4139497 is a prime.

It is a super-3 number, since 3×4139501³ (a number of 21 digits) contains 333 as substring.

Together with 4139503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4139503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069750 + 2069751.

It is an arithmetic number, because the mean of its divisors is an integer number (2069751).

Almost surely, 2^4139501 is an apocalyptic number.

It is an amenable number.

4139501 is a deficient number, since it is larger than the sum of its proper divisors (1).

4139501 is an equidigital number, since it uses as much as digits as its factorization.

4139501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 4139501 is about 2034.5763686822. The cubic root of 4139501 is about 160.5644258263.

The spelling of 4139501 in words is "four million, one hundred thirty-nine thousand, five hundred one".