69428049 has 4 divisors (see below), whose sum is σ = 92570736. Its totient is φ = 46285364.

The previous prime is 69428011. The next prime is 69428063. The reversal of 69428049 is 94082496.

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 69428049 - 2⁸ = 69427793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69428049.

It is not an unprimeable number, because it can be changed into a prime (69424049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11571339 + ... + 11571344.

It is an arithmetic number, because the mean of its divisors is an integer number (23142684).

Almost surely, 2^69428049 is an apocalyptic number.

It is an amenable number.

69428049 is a deficient number, since it is larger than the sum of its proper divisors (23142687).

69428049 is a wasteful number, since it uses less digits than its factorization.

69428049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23142686.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 69428049 is about 8332.3495485967. The cubic root of 69428049 is about 411.0029954613.

The spelling of 69428049 in words is "sixty-nine million, four hundred twenty-eight thousand, forty-nine".