41978689 has 8 divisors (see below), whose sum is σ = 43502760. Its totient is φ = 40459776.

The previous prime is 41978687. The next prime is 41978701. The reversal of 41978689 is 98687914.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7263025 + 34715664 = 2695^2 + 5892^2 .

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 41978689 - 2¹ = 41978687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41978687) 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, 23889 + ... + 25585.

It is an arithmetic number, because the mean of its divisors is an integer number (5437845).

Almost surely, 2^41978689 is an apocalyptic number.

It is an amenable number.

41978689 is a deficient number, since it is larger than the sum of its proper divisors (1524071).

41978689 is a wasteful number, since it uses less digits than its factorization.

41978689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579.

The product of its digits is 870912, while the sum is 52.

The square root of 41978689 is about 6479.0963104433. The cubic root of 41978689 is about 347.5438627930.

The spelling of 41978689 in words is "forty-one million, nine hundred seventy-eight thousand, six hundred eighty-nine".