40189251 has 8 divisors (see below), whose sum is σ = 53665984. Its totient is φ = 26752680.

The previous prime is 40189249. The next prime is 40189297. The reversal of 40189251 is 15298104.

It is a happy number.

40189251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40189251 - 2¹ = 40189249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40189231) 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 7 ways as a sum of consecutive naturals, for example, 7621 + ... + 11766.

It is an arithmetic number, because the mean of its divisors is an integer number (6708248).

Almost surely, 2^40189251 is an apocalyptic number.

40189251 is a deficient number, since it is larger than the sum of its proper divisors (13476733).

40189251 is a wasteful number, since it uses less digits than its factorization.

40189251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20081.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 40189251 is about 6339.4992704472. The cubic root of 40189251 is about 342.5336987107.

The spelling of 40189251 in words is "forty million, one hundred eighty-nine thousand, two hundred fifty-one".