40949371 has 2 divisors, whose sum is σ = 40949372. Its totient is φ = 40949370.

The previous prime is 40949369. The next prime is 40949383. The reversal of 40949371 is 17394904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40949371 - 2¹ = 40949369 is a prime.

Together with 40949369, it forms a pair of twin primes.

It is equal to p_2487844 and since 40949371 and 2487844 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40949371.

It is not a weakly prime, because it can be changed into another prime (40949341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20474685 + 20474686.

It is an arithmetic number, because the mean of its divisors is an integer number (20474686).

Almost surely, 2^40949371 is an apocalyptic number.

40949371 is the 3421-st centered heptagonal number.

40949371 is a deficient number, since it is larger than the sum of its proper divisors (1).

40949371 is an equidigital number, since it uses as much as digits as its factorization.

40949371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 40949371 is about 6399.1695554970. The cubic root of 40949371 is about 344.6797307861.

The spelling of 40949371 in words is "forty million, nine hundred forty-nine thousand, three hundred seventy-one".