40210939 has 4 divisors (see below), whose sum is σ = 40312624. Its totient is φ = 40109256.

The previous prime is 40210931. The next prime is 40210943. The reversal of 40210939 is 93901204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40210939 - 2³ = 40210931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40210931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50247 + ... + 51040.

It is an arithmetic number, because the mean of its divisors is an integer number (10078156).

Almost surely, 2^40210939 is an apocalyptic number.

40210939 is a deficient number, since it is larger than the sum of its proper divisors (101685).

40210939 is a wasteful number, since it uses less digits than its factorization.

40210939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101684.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 40210939 is about 6341.2095849294. The cubic root of 40210939 is about 342.5953033666.

The spelling of 40210939 in words is "forty million, two hundred ten thousand, nine hundred thirty-nine".