1139951 has 2 divisors, whose sum is σ = 1139952. Its totient is φ = 1139950.

The previous prime is 1139921. The next prime is 1139959. The reversal of 1139951 is 1599311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1139951 - 2¹⁴ = 1123567 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569975 + 569976.

It is an arithmetic number, because the mean of its divisors is an integer number (569976).

2^1139951 is an apocalyptic number.

1139951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139951 is an equidigital number, since it uses as much as digits as its factorization.

1139951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1215, while the sum is 29.

The square root of 1139951 is about 1067.6848786042. The cubic root of 1139951 is about 104.4628959487.

The spelling of 1139951 in words is "one million, one hundred thirty-nine thousand, nine hundred fifty-one".