49491967 has 6 divisors (see below), whose sum is σ = 56583528. Its totient is φ = 42405732.

The previous prime is 49491943. The next prime is 49491971. The reversal of 49491967 is 76919494.

It is a de Polignac number, because none of the positive numbers 2^k-49491967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49491967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49497967) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17284 + ... + 19942.

It is an arithmetic number, because the mean of its divisors is an integer number (9430588).

Almost surely, 2^49491967 is an apocalyptic number.

49491967 is a deficient number, since it is larger than the sum of its proper divisors (7091561).

49491967 is an frugal number, since it uses more digits than its factorization.

49491967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325 (or 2666 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 49491967 is about 7035.0527361207. The cubic root of 49491967 is about 367.1511601773.

The spelling of 49491967 in words is "forty-nine million, four hundred ninety-one thousand, nine hundred sixty-seven".