139953379 has 2 divisors, whose sum is σ = 139953380. Its totient is φ = 139953378.

The previous prime is 139953361. The next prime is 139953383. The reversal of 139953379 is 973359931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139953379 - 2¹⁵ = 139920611 is a prime.

It is not a weakly prime, because it can be changed into another prime (139953349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69976689 + 69976690.

It is an arithmetic number, because the mean of its divisors is an integer number (69976690).

Almost surely, 2^139953379 is an apocalyptic number.

139953379 is a deficient number, since it is larger than the sum of its proper divisors (1).

139953379 is an equidigital number, since it uses as much as digits as its factorization.

139953379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 688905, while the sum is 49.

The square root of 139953379 is about 11830.1893053324. The cubic root of 139953379 is about 519.1917658651.

The spelling of 139953379 in words is "one hundred thirty-nine million, nine hundred fifty-three thousand, three hundred seventy-nine".