40212619 has 2 divisors, whose sum is σ = 40212620. Its totient is φ = 40212618.

The previous prime is 40212617. The next prime is 40212631. The reversal of 40212619 is 91621204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40212619 - 2¹ = 40212617 is a prime.

It is a super-2 number, since 2×40212619² = 3234109453678322, which contains 22 as substring.

Together with 40212617, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 40212593 and 40212602.

It is not a weakly prime, because it can be changed into another prime (40212617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20106309 + 20106310.

It is an arithmetic number, because the mean of its divisors is an integer number (20106310).

Almost surely, 2^40212619 is an apocalyptic number.

40212619 is a deficient number, since it is larger than the sum of its proper divisors (1).

40212619 is an equidigital number, since it uses as much as digits as its factorization.

40212619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 40212619 is about 6341.3420503865. The cubic root of 40212619 is about 342.6000744737.

The spelling of 40212619 in words is "forty million, two hundred twelve thousand, six hundred nineteen".