40019522 has 4 divisors (see below), whose sum is σ = 60029286. Its totient is φ = 20009760.

The previous prime is 40019521. The next prime is 40019527. The reversal of 40019522 is 22591004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28398241 + 11621281 = 5329^2 + 3409^2 .

It is a super-2 number, since 2×40019522² = 3203124282216968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40019521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10004879 + ... + 10004882.

Almost surely, 2^40019522 is an apocalyptic number.

40019522 is a deficient number, since it is larger than the sum of its proper divisors (20009764).

40019522 is a wasteful number, since it uses less digits than its factorization.

40019522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20009763.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 40019522 is about 6326.0984816868. The cubic root of 40019522 is about 342.0508172040.

The spelling of 40019522 in words is "forty million, nineteen thousand, five hundred twenty-two".