40685953 has 16 divisors (see below), whose sum is σ = 50918400. Its totient is φ = 31582800.

The previous prime is 40685933. The next prime is 40685959. The reversal of 40685953 is 35958604.

It is a cyclic number.

It is not a de Polignac number, because 40685953 - 2⁵ = 40685921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40685959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23098 + ... + 24796.

It is an arithmetic number, because the mean of its divisors is an integer number (3182400).

Almost surely, 2^40685953 is an apocalyptic number.

It is an amenable number.

40685953 is a deficient number, since it is larger than the sum of its proper divisors (10232447).

40685953 is a wasteful number, since it uses less digits than its factorization.

40685953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 40685953 is about 6378.5541465131. The cubic root of 40685953 is about 343.9390581831.

The spelling of 40685953 in words is "forty million, six hundred eighty-five thousand, nine hundred fifty-three".