4420402421 has 8 divisors (see below), whose sum is σ = 4663246080. Its totient is φ = 4178577888.

The previous prime is 4420402411. The next prime is 4420402471. The reversal of 4420402421 is 1242040244.

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

It is not a de Polignac number, because 4420402421 - 2²² = 4416208117 is a prime.

It is a super-2 number, since 2×4420402421² = 39079915127165322482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4420402411) 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, 245861 + ... + 263226.

It is an arithmetic number, because the mean of its divisors is an integer number (582905760).

Almost surely, 2^4420402421 is an apocalyptic number.

It is an amenable number.

4420402421 is a deficient number, since it is larger than the sum of its proper divisors (242843659).

4420402421 is a wasteful number, since it uses less digits than its factorization.

4420402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509563.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 4420402421 is about 66486.1069773227. The cubic root of 4420402421 is about 1641.1713846488.

Adding to 4420402421 its reverse (1242040244), we get a palindrome (5662442665).

The spelling of 4420402421 in words is "four billion, four hundred twenty million, four hundred two thousand, four hundred twenty-one".