7139401 has 2 divisors, whose sum is σ = 7139402. Its totient is φ = 7139400.

The previous prime is 7139357. The next prime is 7139437. The reversal of 7139401 is 1049317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4080400 + 3059001 = 2020^2 + 1749^2 .

It is a cyclic number.

It is not a de Polignac number, because 7139401 - 2⁷ = 7139273 is a prime.

It is not a weakly prime, because it can be changed into another prime (7139101) 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, 3569700 + 3569701.

It is an arithmetic number, because the mean of its divisors is an integer number (3569701).

Almost surely, 2^7139401 is an apocalyptic number.

It is an amenable number.

7139401 is a deficient number, since it is larger than the sum of its proper divisors (1).

7139401 is an equidigital number, since it uses as much as digits as its factorization.

7139401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 7139401 is about 2671.9657557686. The cubic root of 7139401 is about 192.5546120421.

The spelling of 7139401 in words is "seven million, one hundred thirty-nine thousand, four hundred one".