4997421 has 36 divisors (see below), whose sum is σ = 8568924. Its totient is φ = 2787840.

The previous prime is 4997401. The next prime is 4997471. The reversal of 4997421 is 1247994.

It can be written as a sum of positive squares in 2 ways, for example, as 1334025 + 3663396 = 1155^2 + 1914^2 .

It is not a de Polignac number, because 4997421 - 2⁵ = 4997389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4997401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13981 + ... + 14333.

Almost surely, 2^4997421 is an apocalyptic number.

It is an amenable number.

4997421 is a deficient number, since it is larger than the sum of its proper divisors (3571503).

4997421 is a wasteful number, since it uses less digits than its factorization.

4997421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 380 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 4997421 is about 2235.4912211861. The cubic root of 4997421 is about 170.9681894249.

The spelling of 4997421 in words is "four million, nine hundred ninety-seven thousand, four hundred twenty-one".