40046221 has 4 divisors (see below), whose sum is σ = 40198752. Its totient is φ = 39893692.

The previous prime is 40046219. The next prime is 40046231. The reversal of 40046221 is 12264004.

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 40046221 - 2¹ = 40046219 is a prime.

It is a super-3 number, since 3×40046221³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40046231) 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, 75871 + ... + 76396.

It is an arithmetic number, because the mean of its divisors is an integer number (10049688).

Almost surely, 2^40046221 is an apocalyptic number.

It is an amenable number.

40046221 is a deficient number, since it is larger than the sum of its proper divisors (152531).

40046221 is a wasteful number, since it uses less digits than its factorization.

40046221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152530.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40046221 is about 6328.2083562411. The cubic root of 40046221 is about 342.1268666266.

The spelling of 40046221 in words is "forty million, forty-six thousand, two hundred twenty-one".