1516939 has 4 divisors (see below), whose sum is σ = 1531224. Its totient is φ = 1502656.

The previous prime is 1516909. The next prime is 1516951. The reversal of 1516939 is 9396151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9396151 = 1571 ⋅5981.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1516939 is a prime.

It is a super-2 number, since 2×1516939² = 4602207859442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1516909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6982 + ... + 7195.

It is an arithmetic number, because the mean of its divisors is an integer number (382806).

2^1516939 is an apocalyptic number.

1516939 is a deficient number, since it is larger than the sum of its proper divisors (14285).

1516939 is a wasteful number, since it uses less digits than its factorization.

1516939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14284.

The product of its digits is 7290, while the sum is 34.

The square root of 1516939 is about 1231.6407755511. The cubic root of 1516939 is about 114.9007082464.

The spelling of 1516939 in words is "one million, five hundred sixteen thousand, nine hundred thirty-nine".