621422419 has 4 divisors (see below), whose sum is σ = 621481896. Its totient is φ = 621362944.

The previous prime is 621422393. The next prime is 621422429. The reversal of 621422419 is 914224126.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 914224126 = 2 ⋅457112063.

It is a cyclic number.

It is not a de Polignac number, because 621422419 - 2⁹ = 621421907 is a prime.

It is a super-2 number, since 2×621422419² = 772331645671623122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621422429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9454 + ... + 36499.

It is an arithmetic number, because the mean of its divisors is an integer number (155370474).

Almost surely, 2^621422419 is an apocalyptic number.

621422419 is a deficient number, since it is larger than the sum of its proper divisors (59477).

621422419 is a wasteful number, since it uses less digits than its factorization.

621422419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59476.

The product of its digits is 6912, while the sum is 31.

The square root of 621422419 is about 24928.3456932064. The cubic root of 621422419 is about 853.3534967193.

The spelling of 621422419 in words is "six hundred twenty-one million, four hundred twenty-two thousand, four hundred nineteen".