40450019 has 4 divisors (see below), whose sum is σ = 40463496. Its totient is φ = 40436544.

The previous prime is 40449989. The next prime is 40450027. The reversal of 40450019 is 91005404.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40450019 - 2²⁰ = 39401443 is a prime.

It is a super-2 number, since 2×40450019² = 3272408074200722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40449976 and 40450003.

It is not an unprimeable number, because it can be changed into a prime (40450519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 8994.

It is an arithmetic number, because the mean of its divisors is an integer number (10115874).

Almost surely, 2^40450019 is an apocalyptic number.

40450019 is a deficient number, since it is larger than the sum of its proper divisors (13477).

40450019 is an equidigital number, since it uses as much as digits as its factorization.

40450019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13476.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 40450019 is about 6360.0329401663. The cubic root of 40450019 is about 343.2729455695.

The spelling of 40450019 in words is "forty million, four hundred fifty thousand, nineteen".