36400393 has 2 divisors, whose sum is σ = 36400394. Its totient is φ = 36400392.

The previous prime is 36400391. The next prime is 36400433. The reversal of 36400393 is 39300463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25030009 + 11370384 = 5003^2 + 3372^2 .

It is an emirp because it is prime and its reverse (39300463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36400393 - 2¹ = 36400391 is a prime.

It is a super-2 number, since 2×36400393² = 2649977221108898, which contains 22 as substring.

Together with 36400391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (36400391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18200196 + 18200197.

It is an arithmetic number, because the mean of its divisors is an integer number (18200197).

Almost surely, 2^36400393 is an apocalyptic number.

It is an amenable number.

36400393 is a deficient number, since it is larger than the sum of its proper divisors (1).

36400393 is an equidigital number, since it uses as much as digits as its factorization.

36400393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 36400393 is about 6033.2738210693. The cubic root of 36400393 is about 331.4123519804.

The spelling of 36400393 in words is "thirty-six million, four hundred thousand, three hundred ninety-three".