4396421251 has 2 divisors, whose sum is σ = 4396421252. Its totient is φ = 4396421250.

The previous prime is 4396421213. The next prime is 4396421261. The reversal of 4396421251 is 1521246934.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4396421251 - 2⁹ = 4396420739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4396421251.

It is not a weakly prime, because it can be changed into another prime (4396421201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2198210625 + 2198210626.

It is an arithmetic number, because the mean of its divisors is an integer number (2198210626).

Almost surely, 2^4396421251 is an apocalyptic number.

4396421251 is a deficient number, since it is larger than the sum of its proper divisors (1).

4396421251 is an equidigital number, since it uses as much as digits as its factorization.

4396421251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 4396421251 is about 66305.5144840910. The cubic root of 4396421251 is about 1638.1981562782.

The spelling of 4396421251 in words is "four billion, three hundred ninety-six million, four hundred twenty-one thousand, two hundred fifty-one".