4023890 has 24 divisors (see below), whose sum is σ = 7846308. Its totient is φ = 1485120.

The previous prime is 4023889. The next prime is 4023907. The reversal of 4023890 is 983204.

It can be written as a sum of positive squares in 6 ways, for example, as 11881 + 4012009 = 109^2 + 2003^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500 + ... + 2880.

Almost surely, 2^4023890 is an apocalyptic number.

4023890 is a deficient number, since it is larger than the sum of its proper divisors (3822418).

4023890 is a wasteful number, since it uses less digits than its factorization.

4023890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414 (or 2401 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4023890 is about 2005.9636088424. The cubic root of 4023890 is about 159.0555032156.

It can be divided in two parts, 4023 and 890, that added together give a cube (4913 = 17³).

The spelling of 4023890 in words is "four million, twenty-three thousand, eight hundred ninety".