40021299 has 12 divisors (see below), whose sum is σ = 59039136. Its totient is φ = 26112912.

The previous prime is 40021273. The next prime is 40021313. The reversal of 40021299 is 99212004.

40021299 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 40021299 - 2⁷ = 40021171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40021249) 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 11 ways as a sum of consecutive naturals, for example, 46884 + ... + 47729.

It is an arithmetic number, because the mean of its divisors is an integer number (4919928).

Almost surely, 2^40021299 is an apocalyptic number.

40021299 is a deficient number, since it is larger than the sum of its proper divisors (19017837).

40021299 is a wasteful number, since it uses less digits than its factorization.

40021299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94666 (or 94663 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 40021299 is about 6326.2389300437. The cubic root of 40021299 is about 342.0558798607.

The spelling of 40021299 in words is "forty million, twenty-one thousand, two hundred ninety-nine".