40243654 has 8 divisors (see below), whose sum is σ = 65853288. Its totient is φ = 18292560.

The previous prime is 40243631. The next prime is 40243661. The reversal of 40243654 is 45634204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 914607 + ... + 914650.

It is an arithmetic number, because the mean of its divisors is an integer number (8231661).

Almost surely, 2^40243654 is an apocalyptic number.

40243654 is a deficient number, since it is larger than the sum of its proper divisors (25609634).

40243654 is a wasteful number, since it uses less digits than its factorization.

40243654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829270.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 40243654 is about 6343.7886156460. The cubic root of 40243654 is about 342.6881882668.

Adding to 40243654 its reverse (45634204), we get a palindrome (85877858).

The spelling of 40243654 in words is "forty million, two hundred forty-three thousand, six hundred fifty-four".