40434019 has 4 divisors (see below), whose sum is σ = 40447296. Its totient is φ = 40420744.

The previous prime is 40434011. The next prime is 40434029. The reversal of 40434019 is 91043404.

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 40434019 - 2³ = 40434011 is a prime.

It is a super-2 number, since 2×40434019² = 3269819784984722, 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 = 40433984 and 40434002.

It is not an unprimeable number, because it can be changed into a prime (40434011) 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, 462 + ... + 9004.

It is an arithmetic number, because the mean of its divisors is an integer number (10111824).

Almost surely, 2^40434019 is an apocalyptic number.

40434019 is a deficient number, since it is larger than the sum of its proper divisors (13277).

40434019 is an equidigital number, since it uses as much as digits as its factorization.

40434019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13276.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 40434019 is about 6358.7749606351. The cubic root of 40434019 is about 343.2276790769.

The spelling of 40434019 in words is "forty million, four hundred thirty-four thousand, nineteen".