40109578 has 8 divisors (see below), whose sum is σ = 60270372. Its totient is φ = 20019456.

The previous prime is 40109569. The next prime is 40109593. The reversal of 40109578 is 87590104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38278969 + 1830609 = 6187^2 + 1353^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16225 + ... + 18532.

Almost surely, 2^40109578 is an apocalyptic number.

40109578 is a deficient number, since it is larger than the sum of its proper divisors (20160794).

40109578 is a wasteful number, since it uses less digits than its factorization.

40109578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35336.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 40109578 is about 6333.2122970891. The cubic root of 40109578 is about 342.3071975054.

The spelling of 40109578 in words is "forty million, one hundred nine thousand, five hundred seventy-eight".