139574401 has 2 divisors, whose sum is σ = 139574402. Its totient is φ = 139574400.

The previous prime is 139574389. The next prime is 139574411. The reversal of 139574401 is 104475931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138086001 + 1488400 = 11751^2 + 1220^2 .

It is a cyclic number.

It is not a de Polignac number, because 139574401 - 2⁷ = 139574273 is a prime.

It is not a weakly prime, because it can be changed into another prime (139574411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69787200 + 69787201.

It is an arithmetic number, because the mean of its divisors is an integer number (69787201).

Almost surely, 2^139574401 is an apocalyptic number.

It is an amenable number.

139574401 is a deficient number, since it is larger than the sum of its proper divisors (1).

139574401 is an equidigital number, since it uses as much as digits as its factorization.

139574401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 139574401 is about 11814.1610366543. The cubic root of 139574401 is about 518.7227045976.

The spelling of 139574401 in words is "one hundred thirty-nine million, five hundred seventy-four thousand, four hundred one".