40430621 has 16 divisors (see below), whose sum is σ = 51583488. Its totient is φ = 30769200.

The previous prime is 40430597. The next prime is 40430623. The reversal of 40430621 is 12603404.

It is a happy number.

40430621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40430621 - 2⁶ = 40430557 is a prime.

It is a super-2 number, since 2×40430621² = 3269270228891282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40430593 and 40430602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2795 + ... + 9416.

It is an arithmetic number, because the mean of its divisors is an integer number (3223968).

Almost surely, 2^40430621 is an apocalyptic number.

It is an amenable number.

40430621 is a deficient number, since it is larger than the sum of its proper divisors (11152867).

40430621 is a wasteful number, since it uses less digits than its factorization.

40430621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12272.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40430621 is about 6358.5077651915. The cubic root of 40430621 is about 343.2180640682.

The spelling of 40430621 in words is "forty million, four hundred thirty thousand, six hundred twenty-one".