4921445 has 8 divisors (see below), whose sum is σ = 6109560. Its totient is φ = 3801280.

The previous prime is 4921429. The next prime is 4921447. The reversal of 4921445 is 5441294.

It can be written as a sum of positive squares in 4 ways, for example, as 519841 + 4401604 = 721^2 + 2098^2 .

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

It is not a de Polignac number, because 4921445 - 2⁴ = 4921429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16826 + ... + 17115.

It is an arithmetic number, because the mean of its divisors is an integer number (763695).

Almost surely, 2^4921445 is an apocalyptic number.

It is an amenable number.

4921445 is a deficient number, since it is larger than the sum of its proper divisors (1188115).

4921445 is a wasteful number, since it uses less digits than its factorization.

4921445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33975.

The product of its digits is 5760, while the sum is 29.

The square root of 4921445 is about 2218.4330055244. The cubic root of 4921445 is about 170.0973490875.

The spelling of 4921445 in words is "four million, nine hundred twenty-one thousand, four hundred forty-five".