4001402890 has 32 divisors (see below), whose sum is σ = 7454961360. Its totient is φ = 1544524800.

The previous prime is 4001402849. The next prime is 4001402893. The reversal of 4001402890 is 982041004.

It can be written as a sum of positive squares in 8 ways, for example, as 1012703329 + 2988699561 = 31823^2 + 54669^2 .

It is a super-2 number, since 2×4001402890² = 32022450176200704200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4001402893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902880 + ... + 907300.

Almost surely, 2^4001402890 is an apocalyptic number.

4001402890 is a deficient number, since it is larger than the sum of its proper divisors (3453558470).

4001402890 is a wasteful number, since it uses less digits than its factorization.

4001402890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 4001402890 is about 63256.6430503548. The cubic root of 4001402890 is about 1587.5866093653.

Adding to 4001402890 its reverse (982041004), we get a palindrome (4983443894).

The spelling of 4001402890 in words is "four billion, one million, four hundred two thousand, eight hundred ninety".