40051646 has 4 divisors (see below), whose sum is σ = 60077472. Its totient is φ = 20025822.

The previous prime is 40051637. The next prime is 40051663. The reversal of 40051646 is 64615004.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012910 + ... + 10012913.

It is an arithmetic number, because the mean of its divisors is an integer number (15019368).

Almost surely, 2^40051646 is an apocalyptic number.

40051646 is a deficient number, since it is larger than the sum of its proper divisors (20025826).

40051646 is a wasteful number, since it uses less digits than its factorization.

40051646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20025825.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40051646 is about 6328.6369780546. The cubic root of 40051646 is about 342.1423150626.

The spelling of 40051646 in words is "forty million, fifty-one thousand, six hundred forty-six".