1406439197 has 2 divisors, whose sum is σ = 1406439198. Its totient is φ = 1406439196.

The previous prime is 1406439179. The next prime is 1406439211. The reversal of 1406439197 is 7919346041.

Together with previous prime (1406439179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1406175001 + 264196 = 37499^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406439197 - 2¹² = 1406435101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406409197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703219598 + 703219599.

It is an arithmetic number, because the mean of its divisors is an integer number (703219599).

Almost surely, 2^1406439197 is an apocalyptic number.

It is an amenable number.

1406439197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406439197 is an equidigital number, since it uses as much as digits as its factorization.

1406439197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1406439197 is about 37502.5225418238. The cubic root of 1406439197 is about 1120.4014284356.

The spelling of 1406439197 in words is "one billion, four hundred six million, four hundred thirty-nine thousand, one hundred ninety-seven".