40872019 has 2 divisors, whose sum is σ = 40872020. Its totient is φ = 40872018.

The previous prime is 40872011. The next prime is 40872023. The reversal of 40872019 is 91027804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40872019 - 2³ = 40872011 is a prime.

It is a super-2 number, since 2×40872019² = 3341043874272722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40872011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20436009 + 20436010.

It is an arithmetic number, because the mean of its divisors is an integer number (20436010).

Almost surely, 2^40872019 is an apocalyptic number.

40872019 is a deficient number, since it is larger than the sum of its proper divisors (1).

40872019 is an equidigital number, since it uses as much as digits as its factorization.

40872019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 40872019 is about 6393.1227893730. The cubic root of 40872019 is about 344.4625644724.

It can be divided in two parts, 408 and 72019, that added together give a palindrome (72427).

The spelling of 40872019 in words is "forty million, eight hundred seventy-two thousand, nineteen".