1406997859 has 4 divisors (see below), whose sum is σ = 1414068400. Its totient is φ = 1399927320.

The previous prime is 1406997799. The next prime is 1406997863. The reversal of 1406997859 is 9587996041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9587996041 = 13 ⋅737538157.

It is a cyclic number.

It is not a de Polignac number, because 1406997859 - 2¹³ = 1406989667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406997869) 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 in 3 ways as a sum of consecutive naturals, for example, 3534972 + ... + 3535369.

It is an arithmetic number, because the mean of its divisors is an integer number (353517100).

Almost surely, 2^1406997859 is an apocalyptic number.

1406997859 is a deficient number, since it is larger than the sum of its proper divisors (7070541).

1406997859 is an equidigital number, since it uses as much as digits as its factorization.

1406997859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7070540.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The square root of 1406997859 is about 37509.9701279540. The cubic root of 1406997859 is about 1120.5497564131.

The spelling of 1406997859 in words is "one billion, four hundred six million, nine hundred ninety-seven thousand, eight hundred fifty-nine".