40915405 has 8 divisors (see below), whose sum is σ = 49771512. Its totient is φ = 32283648.

The previous prime is 40915387. The next prime is 40915423. The reversal of 40915405 is 50451904.

It is an interprime number because it is at equal distance from previous prime (40915387) and next prime (40915423).

It can be written as a sum of positive squares in 4 ways, for example, as 5322249 + 35593156 = 2307^2 + 5966^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40915405 - 2⁵ = 40915373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55684 + ... + 56413.

It is an arithmetic number, because the mean of its divisors is an integer number (6221439).

Almost surely, 2^40915405 is an apocalyptic number.

It is an amenable number.

40915405 is a deficient number, since it is larger than the sum of its proper divisors (8856107).

40915405 is a wasteful number, since it uses less digits than its factorization.

40915405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112175.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 40915405 is about 6396.5150668157. The cubic root of 40915405 is about 344.5844046969.

The spelling of 40915405 in words is "forty million, nine hundred fifteen thousand, four hundred five".