40039860090 has 32 divisors (see below), whose sum is σ = 99195526656. Its totient is φ = 10332866880.

The previous prime is 40039860071. The next prime is 40039860101. The reversal of 40039860090 is 9006893004.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21525877 + ... + 21527736.

It is an arithmetic number, because the mean of its divisors is an integer number (3099860208).

Almost surely, 2^40039860090 is an apocalyptic number.

40039860090 is an abundant number, since it is smaller than the sum of its proper divisors (59155666566).

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

40039860090 is a wasteful number, since it uses less digits than its factorization.

40039860090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43053654.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 40039860090 in words is "forty billion, thirty-nine million, eight hundred sixty thousand, ninety".