513949 has 8 divisors (see below), whose sum is σ = 541440. Its totient is φ = 487200.

The previous prime is 513943. The next prime is 513977. The reversal of 513949 is 949315.

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 513949 - 2⁵ = 513917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 513949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513943) 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, 1689 + ... + 1969.

It is an arithmetic number, because the mean of its divisors is an integer number (67680).

2⁵¹³⁹⁴⁹ is an apocalyptic number.

513949 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

513949 is a deficient number, since it is larger than the sum of its proper divisors (27491).

513949 is a wasteful number, since it uses less digits than its factorization.

513949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its digits is 4860, while the sum is 31.

The square root of 513949 is about 716.9023643426. The cubic root of 513949 is about 80.1013818838.

The spelling of 513949 in words is "five hundred thirteen thousand, nine hundred forty-nine".