40433641 has 8 divisors (see below), whose sum is σ = 41817344. Its totient is φ = 39054960.

The previous prime is 40433621. The next prime is 40433663. The reversal of 40433641 is 14633404.

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 40433641 - 2⁷ = 40433513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40433611) 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, 22606 + ... + 24328.

It is an arithmetic number, because the mean of its divisors is an integer number (5227168).

Almost surely, 2^40433641 is an apocalyptic number.

It is an amenable number.

40433641 is a deficient number, since it is larger than the sum of its proper divisors (1383703).

40433641 is a wasteful number, since it uses less digits than its factorization.

40433641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 40433641 is about 6358.7452378594. The cubic root of 40433641 is about 343.2266095116.

The spelling of 40433641 in words is "forty million, four hundred thirty-three thousand, six hundred forty-one".