4291990 has 16 divisors (see below), whose sum is σ = 8180352. Its totient is φ = 1615744.

The previous prime is 4291979. The next prime is 4292009. The reversal of 4291990 is 991924.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

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, 12454 + ... + 12793.

It is an arithmetic number, because the mean of its divisors is an integer number (511272).

Almost surely, 2^4291990 is an apocalyptic number.

4291990 is a deficient number, since it is larger than the sum of its proper divisors (3888362).

4291990 is a wasteful number, since it uses less digits than its factorization.

4291990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25271.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 4291990 is about 2071.7118525509. The cubic root of 4291990 is about 162.5122988719.

The spelling of 4291990 in words is "four million, two hundred ninety-one thousand, nine hundred ninety".