40067851 has 2 divisors, whose sum is σ = 40067852. Its totient is φ = 40067850.

The previous prime is 40067831. The next prime is 40067857. The reversal of 40067851 is 15876004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40067851 - 2¹¹ = 40065803 is a prime.

It is not a weakly prime, because it can be changed into another prime (40067857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20033925 + 20033926.

It is an arithmetic number, because the mean of its divisors is an integer number (20033926).

Almost surely, 2^40067851 is an apocalyptic number.

40067851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40067851 is an equidigital number, since it uses as much as digits as its factorization.

40067851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 40067851 is about 6329.9171400580. The cubic root of 40067851 is about 342.1884527305.

The spelling of 40067851 in words is "forty million, sixty-seven thousand, eight hundred fifty-one".