40355540 has 24 divisors (see below), whose sum is σ = 85273440. Its totient is φ = 16041888.

The previous prime is 40355533. The next prime is 40355551. The reversal of 40355540 is 4555304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2930 + ... + 9449.

It is an arithmetic number, because the mean of its divisors is an integer number (3553060).

Almost surely, 2^40355540 is an apocalyptic number.

It is an amenable number.

40355540 is an abundant number, since it is smaller than the sum of its proper divisors (44917900).

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

40355540 is a wasteful number, since it uses less digits than its factorization.

40355540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12551 (or 12549 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 40355540 is about 6352.6010420929. The cubic root of 40355540 is about 343.0054766555.

The spelling of 40355540 in words is "forty million, three hundred fifty-five thousand, five hundred forty".