40689419 has 4 divisors (see below), whose sum is σ = 40803120. Its totient is φ = 40575720.

The previous prime is 40689413. The next prime is 40689421. The reversal of 40689419 is 91498604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40689419 is a prime.

It is a super-2 number, since 2×40689419² = 3311257637115122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40689413) 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, 56312 + ... + 57029.

It is an arithmetic number, because the mean of its divisors is an integer number (10200780).

Almost surely, 2^40689419 is an apocalyptic number.

40689419 is a deficient number, since it is larger than the sum of its proper divisors (113701).

40689419 is a wasteful number, since it uses less digits than its factorization.

40689419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113700.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 40689419 is about 6378.8258323927. The cubic root of 40689419 is about 343.9488245262.

The spelling of 40689419 in words is "forty million, six hundred eighty-nine thousand, four hundred nineteen".