139962811 has 2 divisors, whose sum is σ = 139962812. Its totient is φ = 139962810.

The previous prime is 139962803. The next prime is 139962821. The reversal of 139962811 is 118269931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139962811 - 2³ = 139962803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139962821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69981405 + 69981406.

It is an arithmetic number, because the mean of its divisors is an integer number (69981406).

Almost surely, 2^139962811 is an apocalyptic number.

139962811 is a deficient number, since it is larger than the sum of its proper divisors (1).

139962811 is an equidigital number, since it uses as much as digits as its factorization.

139962811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 40.

The square root of 139962811 is about 11830.5879397433. The cubic root of 139962811 is about 519.2034290508.

It can be divided in two parts, 13996 and 2811, that added together give a 5-th power (16807 = 7⁵).

The spelling of 139962811 in words is "one hundred thirty-nine million, nine hundred sixty-two thousand, eight hundred eleven".