40870405 has 8 divisors (see below), whose sum is σ = 49479192. Its totient is φ = 32406528.

The previous prime is 40870393. The next prime is 40870409. The reversal of 40870405 is 50407804.

It can be written as a sum of positive squares in 4 ways, for example, as 509796 + 40360609 = 714^2 + 6353^2 .

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 40870405 - 2⁵ = 40870373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40870409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35604 + ... + 36733.

It is an arithmetic number, because the mean of its divisors is an integer number (6184899).

Almost surely, 2^40870405 is an apocalyptic number.

It is an amenable number.

40870405 is a deficient number, since it is larger than the sum of its proper divisors (8608787).

40870405 is a wasteful number, since it uses less digits than its factorization.

40870405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72455.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 40870405 is about 6392.9965587352. The cubic root of 40870405 is about 344.4580302384.

The spelling of 40870405 in words is "forty million, eight hundred seventy thousand, four hundred five".