40989420 has 36 divisors (see below), whose sum is σ = 124335120. Its totient is φ = 10930464.

The previous prime is 40989401. The next prime is 40989439. The reversal of 40989420 is 2498904.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40989401) and next prime (40989439).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113680 + ... + 114039.

Almost surely, 2^40989420 is an apocalyptic number.

It is an amenable number.

40989420 is an abundant number, since it is smaller than the sum of its proper divisors (83345700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40989420 is a wasteful number, since it uses less digits than its factorization.

40989420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227734 (or 227729 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 40989420 is about 6402.2980249282. The cubic root of 40989420 is about 344.7920612115.

The spelling of 40989420 in words is "forty million, nine hundred eighty-nine thousand, four hundred twenty".