40859421 has 4 divisors (see below), whose sum is σ = 54479232. Its totient is φ = 27239612.

The previous prime is 40859419. The next prime is 40859437. The reversal of 40859421 is 12495804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40859421 - 2¹ = 40859419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40859461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6809901 + ... + 6809906.

It is an arithmetic number, because the mean of its divisors is an integer number (13619808).

Almost surely, 2^40859421 is an apocalyptic number.

It is an amenable number.

40859421 is a deficient number, since it is larger than the sum of its proper divisors (13619811).

40859421 is a wasteful number, since it uses less digits than its factorization.

40859421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13619810.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 40859421 is about 6392.1374359443. The cubic root of 40859421 is about 344.4271695541.

The spelling of 40859421 in words is "forty million, eight hundred fifty-nine thousand, four hundred twenty-one".