10209739 has 2 divisors, whose sum is σ = 10209740. Its totient is φ = 10209738.

The previous prime is 10209721. The next prime is 10209799. The reversal of 10209739 is 93790201.

It is a weak prime.

It is an emirp because it is prime and its reverse (93790201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10209739 - 2⁷ = 10209611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10209739.

It is not a weakly prime, because it can be changed into another prime (10209709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5104869 + 5104870.

It is an arithmetic number, because the mean of its divisors is an integer number (5104870).

Almost surely, 2^10209739 is an apocalyptic number.

10209739 is a deficient number, since it is larger than the sum of its proper divisors (1).

10209739 is an equidigital number, since it uses as much as digits as its factorization.

10209739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 10209739 is about 3195.2682203533. The cubic root of 10209739 is about 216.9392894362.

The spelling of 10209739 in words is "ten million, two hundred nine thousand, seven hundred thirty-nine".