5149991 has 8 divisors (see below), whose sum is σ = 6420864. Its totient is φ = 4012920.

The previous prime is 5149987. The next prime is 5150027. The reversal of 5149991 is 1999415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5149991 - 2² = 5149987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5149951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33365 + ... + 33518.

It is an arithmetic number, because the mean of its divisors is an integer number (802608).

Almost surely, 2^5149991 is an apocalyptic number.

5149991 is a deficient number, since it is larger than the sum of its proper divisors (1270873).

5149991 is a wasteful number, since it uses less digits than its factorization.

5149991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66901.

The product of its digits is 14580, while the sum is 38.

The square root of 5149991 is about 2269.3591606443. The cubic root of 5149991 is about 172.6906496769.

The spelling of 5149991 in words is "five million, one hundred forty-nine thousand, nine hundred ninety-one".