49142769 has 16 divisors (see below), whose sum is σ = 70852992. Its totient is φ = 30117888.

The previous prime is 49142741. The next prime is 49142773. The reversal of 49142769 is 96724194.

It is not a de Polignac number, because 49142769 - 2¹³ = 49134577 is a prime.

It is a super-2 number, since 2×49142769² = 4830023489974722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49142769.

It is not an unprimeable number, because it can be changed into a prime (49142369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7572 + ... + 12474.

It is an arithmetic number, because the mean of its divisors is an integer number (4428312).

Almost surely, 2^49142769 is an apocalyptic number.

It is an amenable number.

49142769 is a deficient number, since it is larger than the sum of its proper divisors (21710223).

49142769 is a wasteful number, since it uses less digits than its factorization.

49142769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176.

The product of its digits is 108864, while the sum is 42.

The square root of 49142769 is about 7010.1903683138. The cubic root of 49142769 is about 366.2856246337.

The spelling of 49142769 in words is "forty-nine million, one hundred forty-two thousand, seven hundred sixty-nine".