40101539 has 2 divisors, whose sum is σ = 40101540. Its totient is φ = 40101538.

The previous prime is 40101527. The next prime is 40101541. The reversal of 40101539 is 93510104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40101539 - 2¹² = 40097443 is a prime.

Together with 40101541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40101739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20050769 + 20050770.

It is an arithmetic number, because the mean of its divisors is an integer number (20050770).

Almost surely, 2^40101539 is an apocalyptic number.

40101539 is a deficient number, since it is larger than the sum of its proper divisors (1).

40101539 is an equidigital number, since it uses as much as digits as its factorization.

40101539 is an evil number, because the sum of its binary digits is even.

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

The square root of 40101539 is about 6332.5775952609. The cubic root of 40101539 is about 342.2843268964.

The spelling of 40101539 in words is "forty million, one hundred one thousand, five hundred thirty-nine".