49312691 has 4 divisors (see below), whose sum is σ = 49404384. Its totient is φ = 49221000.

The previous prime is 49312687. The next prime is 49312693. The reversal of 49312691 is 19621394.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49312691 - 2² = 49312687 is a prime.

It is a super-2 number, since 2×49312691² = 4863482987322962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49312693) 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, 45035 + ... + 46116.

It is an arithmetic number, because the mean of its divisors is an integer number (12351096).

Almost surely, 2^49312691 is an apocalyptic number.

49312691 is a deficient number, since it is larger than the sum of its proper divisors (91693).

49312691 is an equidigital number, since it uses as much as digits as its factorization.

49312691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91692.

The product of its digits is 11664, while the sum is 35.

The square root of 49312691 is about 7022.2995521410. The cubic root of 49312691 is about 366.7073101870.

The spelling of 49312691 in words is "forty-nine million, three hundred twelve thousand, six hundred ninety-one".