49149569 has 4 divisors (see below), whose sum is σ = 56170944. Its totient is φ = 42128196.

The previous prime is 49149563. The next prime is 49149589. The reversal of 49149569 is 96594194.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96594194 = 2 ⋅48297097.

It is a cyclic number.

It is not a de Polignac number, because 49149569 - 2⁸ = 49149313 is a prime.

It is a super-2 number, since 2×49149569² = 4831360265771522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49149563) 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, 3510677 + ... + 3510690.

It is an arithmetic number, because the mean of its divisors is an integer number (14042736).

Almost surely, 2^49149569 is an apocalyptic number.

It is an amenable number.

49149569 is a deficient number, since it is larger than the sum of its proper divisors (7021375).

49149569 is an equidigital number, since it uses as much as digits as its factorization.

49149569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7021374.

The product of its digits is 349920, while the sum is 47.

The square root of 49149569 is about 7010.6753597639. The cubic root of 49149569 is about 366.3025184543.

The spelling of 49149569 in words is "forty-nine million, one hundred forty-nine thousand, five hundred sixty-nine".