1139461 has 2 divisors, whose sum is σ = 1139462. Its totient is φ = 1139460.

The previous prime is 1139423. The next prime is 1139471. The reversal of 1139461 is 1649311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 690561 + 448900 = 831^2 + 670^2 .

It is an emirp because it is prime and its reverse (1649311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1139461 - 2¹³ = 1131269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569730 + 569731.

It is an arithmetic number, because the mean of its divisors is an integer number (569731).

2^1139461 is an apocalyptic number.

It is an amenable number.

1139461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139461 is an equidigital number, since it uses as much as digits as its factorization.

1139461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 25.

The square root of 1139461 is about 1067.4553854846. The cubic root of 1139461 is about 104.4479262542.

It can be divided in two parts, 1139 and 461, that added together give a square (1600 = 40²).

The spelling of 1139461 in words is "one million, one hundred thirty-nine thousand, four hundred sixty-one".