101399587 has 2 divisors, whose sum is σ = 101399588. Its totient is φ = 101399586.

The previous prime is 101399567. The next prime is 101399651. The reversal of 101399587 is 785993101.

It is a weak prime.

It is an emirp because it is prime and its reverse (785993101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101399587 is a prime.

It is not a weakly prime, because it can be changed into another prime (101399567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50699793 + 50699794.

It is an arithmetic number, because the mean of its divisors is an integer number (50699794).

Almost surely, 2^101399587 is an apocalyptic number.

101399587 is a deficient number, since it is larger than the sum of its proper divisors (1).

101399587 is an equidigital number, since it uses as much as digits as its factorization.

101399587 is an evil number, because the sum of its binary digits is even.

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

The square root of 101399587 is about 10069.7361931681. The cubic root of 101399587 is about 466.3142945977.

The spelling of 101399587 in words is "one hundred one million, three hundred ninety-nine thousand, five hundred eighty-seven".