139451383 has 2 divisors, whose sum is σ = 139451384. Its totient is φ = 139451382.

The previous prime is 139451339. The next prime is 139451399. The reversal of 139451383 is 383154931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139451383 is a prime.

It is a super-2 number, since 2×139451383² = 38893376441225378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139451183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69725691 + 69725692.

It is an arithmetic number, because the mean of its divisors is an integer number (69725692).

Almost surely, 2^139451383 is an apocalyptic number.

139451383 is a deficient number, since it is larger than the sum of its proper divisors (1).

139451383 is an equidigital number, since it uses as much as digits as its factorization.

139451383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 139451383 is about 11808.9535099432. The cubic root of 139451383 is about 518.5702626359.

The spelling of 139451383 in words is "one hundred thirty-nine million, four hundred fifty-one thousand, three hundred eighty-three".