40067385 has 16 divisors (see below), whose sum is σ = 67879296. Its totient is φ = 20112128.

The previous prime is 40067383. The next prime is 40067393. The reversal of 40067385 is 58376004.

It is a cyclic number.

It is not a de Polignac number, because 40067385 - 2¹ = 40067383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40067383) 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, 78309 + ... + 78818.

It is an arithmetic number, because the mean of its divisors is an integer number (4242456).

Almost surely, 2^40067385 is an apocalyptic number.

It is an amenable number.

40067385 is a deficient number, since it is larger than the sum of its proper divisors (27811911).

40067385 is a wasteful number, since it uses less digits than its factorization.

40067385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157152.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40067385 is about 6329.8803306224. The cubic root of 40067385 is about 342.1871261438.

The spelling of 40067385 in words is "forty million, sixty-seven thousand, three hundred eighty-five".