40989867 has 4 divisors (see below), whose sum is σ = 54653160. Its totient is φ = 27326576.

The previous prime is 40989857. The next prime is 40989889. The reversal of 40989867 is 76898904.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40989867 - 2¹¹ = 40987819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40989827) 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, 6831642 + ... + 6831647.

It is an arithmetic number, because the mean of its divisors is an integer number (13663290).

Almost surely, 2^40989867 is an apocalyptic number.

40989867 is a deficient number, since it is larger than the sum of its proper divisors (13663293).

40989867 is a wasteful number, since it uses less digits than its factorization.

40989867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13663292.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 40989867 is about 6402.3329341733. The cubic root of 40989867 is about 344.7933145552.

It can be divided in two parts, 409898 and 67, that added together give a triangular number (409965 = T₉₀₅).

The spelling of 40989867 in words is "forty million, nine hundred eighty-nine thousand, eight hundred sixty-seven".