139101461 has 2 divisors, whose sum is σ = 139101462. Its totient is φ = 139101460.

The previous prime is 139101373. The next prime is 139101467. The reversal of 139101461 is 164101931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139098436 + 3025 = 11794^2 + 55^2 .

It is a cyclic number.

It is not a de Polignac number, because 139101461 - 2¹⁴ = 139085077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139101461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139101467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69550730 + 69550731.

It is an arithmetic number, because the mean of its divisors is an integer number (69550731).

Almost surely, 2^139101461 is an apocalyptic number.

It is an amenable number.

139101461 is a deficient number, since it is larger than the sum of its proper divisors (1).

139101461 is an equidigital number, since it uses as much as digits as its factorization.

139101461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 139101461 is about 11794.1282424773. The cubic root of 139101461 is about 518.1361540396.

The spelling of 139101461 in words is "one hundred thirty-nine million, one hundred one thousand, four hundred sixty-one".