993437 has 2 divisors, whose sum is σ = 993438. Its totient is φ = 993436.

The previous prime is 993431. The next prime is 993451. The reversal of 993437 is 734399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556516 + 436921 = 746^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 993437 - 2¹² = 989341 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 993397 and 993406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993431) 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 as a sum of consecutive naturals, namely, 496718 + 496719.

It is an arithmetic number, because the mean of its divisors is an integer number (496719).

2⁹⁹³⁴³⁷ is an apocalyptic number.

It is an amenable number.

993437 is a deficient number, since it is larger than the sum of its proper divisors (1).

993437 is an equidigital number, since it uses as much as digits as its factorization.

993437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 35.

The square root of 993437 is about 996.7130981381. The cubic root of 993437 is about 99.7807529921.

The spelling of 993437 in words is "nine hundred ninety-three thousand, four hundred thirty-seven".