40689054 has 80 divisors (see below), whose sum is σ = 106321248. Its totient is φ = 11389248.

The previous prime is 40689037. The next prime is 40689067. The reversal of 40689054 is 45098604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59764 + ... + 60440.

Almost surely, 2^40689054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40689054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53160624).

40689054 is an abundant number, since it is smaller than the sum of its proper divisors (65632194).

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

40689054 is a wasteful number, since it uses less digits than its factorization.

40689054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 40689054 is about 6378.7972220474. The cubic root of 40689054 is about 343.9477960713.

The spelling of 40689054 in words is "forty million, six hundred eighty-nine thousand, fifty-four".