40426309 has 8 divisors (see below), whose sum is σ = 50401728. Its totient is φ = 31500960.

The previous prime is 40426283. The next prime is 40426339. The reversal of 40426309 is 90362404.

40426309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40426309 - 2⁷ = 40426181 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 (40426339) 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 7 ways as a sum of consecutive naturals, for example, 262432 + ... + 262585.

It is an arithmetic number, because the mean of its divisors is an integer number (6300216).

Almost surely, 2^40426309 is an apocalyptic number.

It is an amenable number.

40426309 is a deficient number, since it is larger than the sum of its proper divisors (9975419).

40426309 is a wasteful number, since it uses less digits than its factorization.

40426309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525035.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40426309 is about 6358.1686828835. The cubic root of 40426309 is about 343.2058620221.

The spelling of 40426309 in words is "forty million, four hundred twenty-six thousand, three hundred nine".