40002549 has 8 divisors (see below), whose sum is σ = 53400672. Its totient is φ = 26636400.

The previous prime is 40002491. The next prime is 40002559. The reversal of 40002549 is 94520004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40002549 - 2⁷ = 40002421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40002559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4902 + ... + 10199.

It is an arithmetic number, because the mean of its divisors is an integer number (6675084).

Almost surely, 2^40002549 is an apocalyptic number.

It is an amenable number.

40002549 is a deficient number, since it is larger than the sum of its proper divisors (13398123).

40002549 is a wasteful number, since it uses less digits than its factorization.

40002549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15987.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40002549 is about 6324.7568332704. The cubic root of 40002549 is about 342.0024537288.

The spelling of 40002549 in words is "forty million, two thousand, five hundred forty-nine".