1953939 has 8 divisors (see below), whose sum is σ = 2805712. Its totient is φ = 1202400.

The previous prime is 1953911. The next prime is 1953943. The reversal of 1953939 is 9393591.

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

It is not a de Polignac number, because 1953939 - 2⁷ = 1953811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 50101 = 1953939 / (1 + 9 + 5 + 3 + 9 + 3 + 9).

1953939 is a modest number, since divided by 3939 gives 195 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1953897 and 1953906.

It is not an unprimeable number, because it can be changed into a prime (1953949) 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 7 ways as a sum of consecutive naturals, for example, 25012 + ... + 25089.

It is an arithmetic number, because the mean of its divisors is an integer number (350714).

2^1953939 is an apocalyptic number.

1953939 is a deficient number, since it is larger than the sum of its proper divisors (851773).

1953939 is a wasteful number, since it uses less digits than its factorization.

1953939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50117.

The product of its digits is 32805, while the sum is 39.

The square root of 1953939 is about 1397.8336810937. The cubic root of 1953939 is about 125.0173629215.

The spelling of 1953939 in words is "one million, nine hundred fifty-three thousand, nine hundred thirty-nine".