40039893 has 8 divisors (see below), whose sum is σ = 59318400. Its totient is φ = 26693244.

The previous prime is 40039891. The next prime is 40039907. The reversal of 40039893 is 39893004.

It is not a de Polignac number, because 40039893 - 2¹ = 40039891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40039891) 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, 741453 + ... + 741506.

It is an arithmetic number, because the mean of its divisors is an integer number (7414800).

Almost surely, 2^40039893 is an apocalyptic number.

It is an amenable number.

40039893 is a deficient number, since it is larger than the sum of its proper divisors (19278507).

40039893 is a wasteful number, since it uses less digits than its factorization.

40039893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482968 (or 1482962 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 40039893 is about 6327.7083529505. The cubic root of 40039893 is about 342.1088450106.

The spelling of 40039893 in words is "forty million, thirty-nine thousand, eight hundred ninety-three".