1396550149 has 2 divisors, whose sum is σ = 1396550150. Its totient is φ = 1396550148.

The previous prime is 1396550107. The next prime is 1396550167. The reversal of 1396550149 is 9410556931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1373221249 + 23328900 = 37057^2 + 4830^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396550149 - 2⁷ = 1396550021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396550849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698275074 + 698275075.

It is an arithmetic number, because the mean of its divisors is an integer number (698275075).

Almost surely, 2^1396550149 is an apocalyptic number.

It is an amenable number.

1396550149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396550149 is an equidigital number, since it uses as much as digits as its factorization.

1396550149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 1396550149 is about 37370.4448595411. Note that the first 3 decimals coincide. The cubic root of 1396550149 is about 1117.7693029092.

The spelling of 1396550149 in words is "one billion, three hundred ninety-six million, five hundred fifty thousand, one hundred forty-nine".