1429663639 has 2 divisors, whose sum is σ = 1429663640. Its totient is φ = 1429663638.

The previous prime is 1429663619. The next prime is 1429663661. The reversal of 1429663639 is 9363669241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1429663639 - 2²⁷ = 1295445911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1429663592 and 1429663601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1429663619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714831819 + 714831820.

It is an arithmetic number, because the mean of its divisors is an integer number (714831820).

Almost surely, 2^1429663639 is an apocalyptic number.

1429663639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1429663639 is an equidigital number, since it uses as much as digits as its factorization.

1429663639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 49.

The square root of 1429663639 is about 37810.8931261879. The cubic root of 1429663639 is about 1126.5348305857.

The spelling of 1429663639 in words is "one billion, four hundred twenty-nine million, six hundred sixty-three thousand, six hundred thirty-nine".