93913389 has 12 divisors (see below), whose sum is σ = 143632476. Its totient is φ = 58925952.

The previous prime is 93913387. The next prime is 93913399. The reversal of 93913389 is 98331939.

It can be written as a sum of positive squares in 2 ways, for example, as 65076489 + 28836900 = 8067^2 + 5370^2 .

It is not a de Polignac number, because 93913389 - 2¹ = 93913387 is a prime.

It is a super-4 number, since 4×93913389⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93913381) 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 11 ways as a sum of consecutive naturals, for example, 306754 + ... + 307059.

It is an arithmetic number, because the mean of its divisors is an integer number (11969373).

Almost surely, 2^93913389 is an apocalyptic number.

It is an amenable number.

93913389 is a deficient number, since it is larger than the sum of its proper divisors (49719087).

93913389 is a wasteful number, since it uses less digits than its factorization.

93913389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613836 (or 613833 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 93913389 is about 9690.8920642013. The cubic root of 93913389 is about 454.5439039450.

The spelling of 93913389 in words is "ninety-three million, nine hundred thirteen thousand, three hundred eighty-nine".