5421990 has 32 divisors (see below), whose sum is σ = 14872320. Its totient is φ = 1239264.

The previous prime is 5421947. The next prime is 5422003. The reversal of 5421990 is 991245.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12700 + ... + 13119.

It is an arithmetic number, because the mean of its divisors is an integer number (464760).

Almost surely, 2^5421990 is an apocalyptic number.

5421990 is an abundant number, since it is smaller than the sum of its proper divisors (9450330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5421990 is a wasteful number, since it uses less digits than its factorization.

5421990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25836.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 5421990 is about 2328.5166952375. The cubic root of 5421990 is about 175.6788867626.

The spelling of 5421990 in words is "five million, four hundred twenty-one thousand, nine hundred ninety".