40022002 has 4 divisors (see below), whose sum is σ = 60033006. Its totient is φ = 20011000.

The previous prime is 40021997. The next prime is 40022011. The reversal of 40022002 is 20022004.

It is a happy number.

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., 31147561 + 8874441 = 5581^2 + 2979^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40022002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005499 + ... + 10005502.

Almost surely, 2^40022002 is an apocalyptic number.

40022002 is a deficient number, since it is larger than the sum of its proper divisors (20011004).

40022002 is a wasteful number, since it uses less digits than its factorization.

40022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20011003.

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 40022002 is about 6326.2944920388. The cubic root of 40022002 is about 342.0578826599.

Adding to 40022002 its reverse (20022004), we get a palindrome (60044006).

The spelling of 40022002 in words is "forty million, twenty-two thousand, two".