40221401 has 4 divisors (see below), whose sum is σ = 43877904. Its totient is φ = 36564900.

The previous prime is 40221367. The next prime is 40221403. The reversal of 40221401 is 10412204.

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 a de Polignac number, because none of the positive numbers 2^k-40221401 is a prime.

It is a super-2 number, since 2×40221401² = 3235522196805602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40221403) 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, 1828235 + ... + 1828256.

It is an arithmetic number, because the mean of its divisors is an integer number (10969476).

Almost surely, 2^40221401 is an apocalyptic number.

It is an amenable number.

40221401 is a deficient number, since it is larger than the sum of its proper divisors (3656503).

40221401 is a wasteful number, since it uses less digits than its factorization.

40221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656502.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 40221401 is about 6342.0344527604. The cubic root of 40221401 is about 342.6250127056.

Adding to 40221401 its reverse (10412204), we get a palindrome (50633605).

The spelling of 40221401 in words is "forty million, two hundred twenty-one thousand, four hundred one".