40140969 has 8 divisors (see below), whose sum is σ = 58386912. Its totient is φ = 24327840.

The previous prime is 40140953. The next prime is 40140979. The reversal of 40140969 is 96904104.

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

It is not a de Polignac number, because 40140969 - 2⁴ = 40140953 is a prime.

It is a super-2 number, since 2×40140969² = 3222594784517922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1216393 = 40140969 / (4 + 0 + 1 + 4 + 0 + 9 + 6 + 9).

It is not an unprimeable number, because it can be changed into a prime (40140979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608164 + ... + 608229.

It is an arithmetic number, because the mean of its divisors is an integer number (7298364).

Almost surely, 2^40140969 is an apocalyptic number.

It is an amenable number.

40140969 is a deficient number, since it is larger than the sum of its proper divisors (18245943).

40140969 is a wasteful number, since it uses less digits than its factorization.

40140969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216407.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 40140969 is about 6335.6900965877. The cubic root of 40140969 is about 342.3964742964.

The spelling of 40140969 in words is "forty million, one hundred forty thousand, nine hundred sixty-nine".