663429049 has 4 divisors (see below), whose sum is σ = 663568000. Its totient is φ = 663290100.

The previous prime is 663429007. The next prime is 663429079. The reversal of 663429049 is 940924366.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 663429049 - 2⁷ = 663428921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663428996 and 663429014.

It is not an unprimeable number, because it can be changed into a prime (663429079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62049 + ... + 71950.

It is an arithmetic number, because the mean of its divisors is an integer number (165892000).

Almost surely, 2^663429049 is an apocalyptic number.

It is an amenable number.

663429049 is a deficient number, since it is larger than the sum of its proper divisors (138951).

663429049 is a wasteful number, since it uses less digits than its factorization.

663429049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138950.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 663429049 is about 25757.1164729284. The cubic root of 663429049 is about 872.1640095125.

The spelling of 663429049 in words is "six hundred sixty-three million, four hundred twenty-nine thousand, forty-nine".