40878419 has 8 divisors (see below), whose sum is σ = 41628048. Its totient is φ = 40135680.

The previous prime is 40878403. The next prime is 40878457. The reversal of 40878419 is 91487804.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40878419 - 2⁴ = 40878403 is a prime.

It is a super-2 number, since 2×40878419² = 3342090279879122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40878619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11099 + ... + 14315.

It is an arithmetic number, because the mean of its divisors is an integer number (5203506).

Almost surely, 2^40878419 is an apocalyptic number.

40878419 is a deficient number, since it is larger than the sum of its proper divisors (749629).

40878419 is a wasteful number, since it uses less digits than its factorization.

40878419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 40878419 is about 6393.6233076402. The cubic root of 40878419 is about 344.4805429119.

The spelling of 40878419 in words is "forty million, eight hundred seventy-eight thousand, four hundred nineteen".