4921900 has 36 divisors (see below), whose sum is σ = 10827432. Its totient is φ = 1941760.

The previous prime is 4921883. The next prime is 4921913. The reversal of 4921900 is 91294.

It is a super-2 number, since 2×4921900² = 48450199220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 8004 + ... + 8596.

It is an arithmetic number, because the mean of its divisors is an integer number (300762).

Almost surely, 2^4921900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4921900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5413716).

4921900 is an abundant number, since it is smaller than the sum of its proper divisors (5905532).

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

4921900 is a wasteful number, since it uses less digits than its factorization.

4921900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 4921900 is about 2218.5355530169. The cubic root of 4921900 is about 170.1025909022.

The spelling of 4921900 in words is "four million, nine hundred twenty-one thousand, nine hundred".