172941739 has 2 divisors, whose sum is σ = 172941740. Its totient is φ = 172941738.

The previous prime is 172941733. The next prime is 172941749. The reversal of 172941739 is 937149271.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172941739 - 2¹⁷ = 172810667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172941695 and 172941704.

It is not a weakly prime, because it can be changed into another prime (172941733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86470869 + 86470870.

It is an arithmetic number, because the mean of its divisors is an integer number (86470870).

Almost surely, 2^172941739 is an apocalyptic number.

172941739 is a deficient number, since it is larger than the sum of its proper divisors (1).

172941739 is an equidigital number, since it uses as much as digits as its factorization.

172941739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 43.

The square root of 172941739 is about 13150.7315005668. The cubic root of 172941739 is about 557.1429087286.

The spelling of 172941739 in words is "one hundred seventy-two million, nine hundred forty-one thousand, seven hundred thirty-nine".