40452019 has 2 divisors, whose sum is σ = 40452020. Its totient is φ = 40452018.

The previous prime is 40451981. The next prime is 40452023. The reversal of 40452019 is 91025404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40452019 is a prime.

It is a super-2 number, since 2×40452019² = 3272731682352722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40451984 and 40452002.

It is not a weakly prime, because it can be changed into another prime (40452059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20226009 + 20226010.

It is an arithmetic number, because the mean of its divisors is an integer number (20226010).

Almost surely, 2^40452019 is an apocalyptic number.

40452019 is a deficient number, since it is larger than the sum of its proper divisors (1).

40452019 is an equidigital number, since it uses as much as digits as its factorization.

40452019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 40452019 is about 6360.1901701128. The cubic root of 40452019 is about 343.2786030417.

The spelling of 40452019 in words is "forty million, four hundred fifty-two thousand, nineteen".