4001290 has 16 divisors (see below), whose sum is σ = 7626312. Its totient is φ = 1506304.

The previous prime is 4001269. The next prime is 4001303. The reversal of 4001290 is 921004.

It can be written as a sum of positive squares in 4 ways, for example, as 3381921 + 619369 = 1839^2 + 787^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11599 + ... + 11938.

Almost surely, 2^4001290 is an apocalyptic number.

4001290 is a deficient number, since it is larger than the sum of its proper divisors (3625022).

4001290 is a wasteful number, since it uses less digits than its factorization.

4001290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23561.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 4001290 is about 2000.3224740026. The cubic root of 4001290 is about 158.7571679240.

Adding to 4001290 its reverse (921004), we get a palindrome (4922294).

The spelling of 4001290 in words is "four million, one thousand, two hundred ninety".