11389957 has 2 divisors, whose sum is σ = 11389958. Its totient is φ = 11389956.

The previous prime is 11389943. The next prime is 11389979. The reversal of 11389957 is 75998311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11296321 + 93636 = 3361^2 + 306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11389957 is a prime.

It is a super-2 number, since 2×11389957² = 259462240923698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11389907) 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, 5694978 + 5694979.

It is an arithmetic number, because the mean of its divisors is an integer number (5694979).

Almost surely, 2^11389957 is an apocalyptic number.

11389957 is the 1949-th hex number.

It is an amenable number.

11389957 is a deficient number, since it is larger than the sum of its proper divisors (1).

11389957 is an equidigital number, since it uses as much as digits as its factorization.

11389957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 43.

The square root of 11389957 is about 3374.9010355861. The cubic root of 11389957 is about 224.9956015601.

The spelling of 11389957 in words is "eleven million, three hundred eighty-nine thousand, nine hundred fifty-seven".