40190851 has 2 divisors, whose sum is σ = 40190852. Its totient is φ = 40190850.

The previous prime is 40190837. The next prime is 40190861. The reversal of 40190851 is 15809104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40190851 - 2⁵ = 40190819 is a prime.

It is not a weakly prime, because it can be changed into another prime (40190831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20095425 + 20095426.

It is an arithmetic number, because the mean of its divisors is an integer number (20095426).

Almost surely, 2^40190851 is an apocalyptic number.

40190851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40190851 is an equidigital number, since it uses as much as digits as its factorization.

40190851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 40190851 is about 6339.6254621231. The cubic root of 40190851 is about 342.5382442598.

Adding to 40190851 its reverse (15809104), we get a palindrome (55999955).

It can be divided in two parts, 40190 and 851, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 40190851 in words is "forty million, one hundred ninety thousand, eight hundred fifty-one".