40023955 has 8 divisors (see below), whose sum is σ = 48085632. Its totient is φ = 31981248.

The previous prime is 40023947. The next prime is 40023989. The reversal of 40023955 is 55932004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40023955 - 2³ = 40023947 is a prime.

It is a Duffinian 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, 414 + ... + 8956.

It is an arithmetic number, because the mean of its divisors is an integer number (6010704).

Almost surely, 2^40023955 is an apocalyptic number.

40023955 is a deficient number, since it is larger than the sum of its proper divisors (8061677).

40023955 is an equidigital number, since it uses as much as digits as its factorization.

40023955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9485.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 40023955 is about 6326.4488459166. The cubic root of 40023955 is about 342.0634465010.

Adding to 40023955 its reverse (55932004), we get a palindrome (95955959).

The spelling of 40023955 in words is "forty million, twenty-three thousand, nine hundred fifty-five".