1406434378 has 16 divisors (see below), whose sum is σ = 2351315520. Its totient is φ = 627016896.

The previous prime is 1406434369. The next prime is 1406434399. The reversal of 1406434378 is 8734346041.

It is a self number, because there is not a number n which added to its sum of digits gives 1406434378.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1087926 + ... + 1089217.

It is an arithmetic number, because the mean of its divisors is an integer number (146957220).

Almost surely, 2^1406434378 is an apocalyptic number.

1406434378 is a deficient number, since it is larger than the sum of its proper divisors (944881142).

1406434378 is a wasteful number, since it uses less digits than its factorization.

1406434378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177181.

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 1406434378 is about 37502.4582927573. The cubic root of 1406434378 is about 1120.4001487925.

The spelling of 1406434378 in words is "one billion, four hundred six million, four hundred thirty-four thousand, three hundred seventy-eight".