40101839 has 2 divisors, whose sum is σ = 40101840. Its totient is φ = 40101838.

The previous prime is 40101833. The next prime is 40101871. The reversal of 40101839 is 93810104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40101839 - 2⁴ = 40101823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40101833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20050919 + 20050920.

It is an arithmetic number, because the mean of its divisors is an integer number (20050920).

Almost surely, 2^40101839 is an apocalyptic number.

40101839 is a deficient number, since it is larger than the sum of its proper divisors (1).

40101839 is an equidigital number, since it uses as much as digits as its factorization.

40101839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 40101839 is about 6332.6012822536. The cubic root of 40101839 is about 342.2851804384.

The spelling of 40101839 in words is "forty million, one hundred one thousand, eight hundred thirty-nine".