40913261 has 4 divisors (see below), whose sum is σ = 40928412. Its totient is φ = 40898112.

The previous prime is 40913239. The next prime is 40913263. The reversal of 40913261 is 16231904.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34633225 + 6280036 = 5885^2 + 2506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40913261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40913261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40913263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300 + ... + 9333.

It is an arithmetic number, because the mean of its divisors is an integer number (10232103).

Almost surely, 2^40913261 is an apocalyptic number.

It is an amenable number.

40913261 is a deficient number, since it is larger than the sum of its proper divisors (15151).

40913261 is a wasteful number, since it uses less digits than its factorization.

40913261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15150.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 40913261 is about 6396.3474733632. The cubic root of 40913261 is about 344.5783857588.

The spelling of 40913261 in words is "forty million, nine hundred thirteen thousand, two hundred sixty-one".