1406207729 has 2 divisors, whose sum is σ = 1406207730. Its totient is φ = 1406207728.

The previous prime is 1406207653. The next prime is 1406207783. The reversal of 1406207729 is 9277026041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1341244129 + 64963600 = 36623^2 + 8060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406207729 - 2¹² = 1406203633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1406207692 and 1406207701.

It is not a weakly prime, because it can be changed into another prime (1406207029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703103864 + 703103865.

It is an arithmetic number, because the mean of its divisors is an integer number (703103865).

Almost surely, 2^1406207729 is an apocalyptic number.

It is an amenable number.

1406207729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406207729 is an equidigital number, since it uses as much as digits as its factorization.

1406207729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1406207729 is about 37499.4363824311. The cubic root of 1406207729 is about 1120.3399608403.

The spelling of 1406207729 in words is "one billion, four hundred six million, two hundred seven thousand, seven hundred twenty-nine".