4430031997 has 2 divisors, whose sum is σ = 4430031998. Its totient is φ = 4430031996.

The previous prime is 4430031943. The next prime is 4430032031. The reversal of 4430031997 is 7991300344.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4332140761 + 97891236 = 65819^2 + 9894^2 .

It is a cyclic number.

It is not a de Polignac number, because 4430031997 - 2³¹ = 2282548349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4430061997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215015998 + 2215015999.

It is an arithmetic number, because the mean of its divisors is an integer number (2215015999).

Almost surely, 2^4430031997 is an apocalyptic number.

It is an amenable number.

4430031997 is a deficient number, since it is larger than the sum of its proper divisors (1).

4430031997 is an equidigital number, since it uses as much as digits as its factorization.

4430031997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 4430031997 is about 66558.4855371575. The cubic root of 4430031997 is about 1642.3622507799.

The spelling of 4430031997 in words is "four billion, four hundred thirty million, thirty-one thousand, nine hundred ninety-seven".