1406402791 has 2 divisors, whose sum is σ = 1406402792. Its totient is φ = 1406402790.

The previous prime is 1406402783. The next prime is 1406402807. The reversal of 1406402791 is 1972046041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1406402791 - 2³ = 1406402783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406402731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703201395 + 703201396.

It is an arithmetic number, because the mean of its divisors is an integer number (703201396).

Almost surely, 2^1406402791 is an apocalyptic number.

1406402791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406402791 is an equidigital number, since it uses as much as digits as its factorization.

1406402791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1406402791 is about 37502.0371579998. The cubic root of 1406402791 is about 1120.3917610698.

The spelling of 1406402791 in words is "one billion, four hundred six million, four hundred two thousand, seven hundred ninety-one".