4187990 has 8 divisors (see below), whose sum is σ = 7538400. Its totient is φ = 1675192.

The previous prime is 4187987. The next prime is 4188011. The reversal of 4187990 is 997814.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209390 + ... + 209409.

It is an arithmetic number, because the mean of its divisors is an integer number (942300).

Almost surely, 2^4187990 is an apocalyptic number.

4187990 is a deficient number, since it is larger than the sum of its proper divisors (3350410).

4187990 is a wasteful number, since it uses less digits than its factorization.

4187990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418806.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 4187990 is about 2046.4579155214. The cubic root of 4187990 is about 161.1889298615.

It can be divided in two parts, 418 and 7990, that multiplied together give a triangular number (3339820 = T₂₅₈₄).

The spelling of 4187990 in words is "four million, one hundred eighty-seven thousand, nine hundred ninety".