1429878797 has 2 divisors, whose sum is σ = 1429878798. Its totient is φ = 1429878796.

The previous prime is 1429878781. The next prime is 1429878799. The reversal of 1429878797 is 7978789241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1346229481 + 83649316 = 36691^2 + 9146^2 .

It is an emirp because it is prime and its reverse (7978789241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1429878797 - 2⁴ = 1429878781 is a prime.

It is a super-2 number, since 2×1429878797² = 4089106748220334418, which contains 22 as substring.

Together with 1429878799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1429878799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714939398 + 714939399.

It is an arithmetic number, because the mean of its divisors is an integer number (714939399).

Almost surely, 2^1429878797 is an apocalyptic number.

It is an amenable number.

1429878797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1429878797 is an equidigital number, since it uses as much as digits as its factorization.

1429878797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14224896, while the sum is 62.

The square root of 1429878797 is about 37813.7382045203. The cubic root of 1429878797 is about 1126.5913405732.

The spelling of 1429878797 in words is "one billion, four hundred twenty-nine million, eight hundred seventy-eight thousand, seven hundred ninety-seven".