40384090 has 32 divisors (see below), whose sum is σ = 76951296. Its totient is φ = 15227520.

The previous prime is 40384081. The next prime is 40384093. The reversal of 40384090 is 9048304.

It is not an unprimeable number, because it can be changed into a prime (40384093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15094 + ... + 17566.

It is an arithmetic number, because the mean of its divisors is an integer number (2404728).

Almost surely, 2^40384090 is an apocalyptic number.

40384090 is a deficient number, since it is larger than the sum of its proper divisors (36567206).

40384090 is a wasteful number, since it uses less digits than its factorization.

40384090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40384090 is about 6354.8477558475. The cubic root of 40384090 is about 343.0863453369.

It can be divided in two parts, 4038 and 4090, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 40384090 in words is "forty million, three hundred eighty-four thousand, ninety".