1406440694 has 8 divisors (see below), whose sum is σ = 2110091808. Its totient is φ = 703076760.

The previous prime is 1406440691. The next prime is 1406440709. The reversal of 1406440694 is 4960446041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406440691) 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, 59102 + ... + 79409.

It is an arithmetic number, because the mean of its divisors is an integer number (263761476).

Almost surely, 2^1406440694 is an apocalyptic number.

1406440694 is a deficient number, since it is larger than the sum of its proper divisors (703651114).

1406440694 is a wasteful number, since it uses less digits than its factorization.

1406440694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143590.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 1406440694 is about 37502.5425004759. The cubic root of 1406440694 is about 1120.4018259502.

The spelling of 1406440694 in words is "one billion, four hundred six million, four hundred forty thousand, six hundred ninety-four".