139227401 has 2 divisors, whose sum is σ = 139227402. Its totient is φ = 139227400.

The previous prime is 139227377. The next prime is 139227419. The reversal of 139227401 is 104722931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127667401 + 11560000 = 11299^2 + 3400^2 .

It is a cyclic number.

It is not a de Polignac number, because 139227401 - 2²⁶ = 72118537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139227001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69613700 + 69613701.

It is an arithmetic number, because the mean of its divisors is an integer number (69613701).

Almost surely, 2^139227401 is an apocalyptic number.

It is an amenable number.

139227401 is a deficient number, since it is larger than the sum of its proper divisors (1).

139227401 is an equidigital number, since it uses as much as digits as its factorization.

139227401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 139227401 is about 11799.4661319909. The cubic root of 139227401 is about 518.2924773050.

The spelling of 139227401 in words is "one hundred thirty-nine million, two hundred twenty-seven thousand, four hundred one".