40026609 has 16 divisors (see below), whose sum is σ = 67770240. Its totient is φ = 22872240.

The previous prime is 40026599. The next prime is 40026629. The reversal of 40026609 is 90662004.

It is not a de Polignac number, because 40026609 - 2⁹ = 40026097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40026629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105702 + ... + 106079.

It is an arithmetic number, because the mean of its divisors is an integer number (4235640).

Almost surely, 2^40026609 is an apocalyptic number.

It is an amenable number.

40026609 is a deficient number, since it is larger than the sum of its proper divisors (27743631).

40026609 is a wasteful number, since it uses less digits than its factorization.

40026609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211797 (or 211791 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40026609 is about 6326.6585967634. The cubic root of 40026609 is about 342.0710071091.

The spelling of 40026609 in words is "forty million, twenty-six thousand, six hundred nine".