1406400724 has 12 divisors (see below), whose sum is σ = 2484203904. Its totient is φ = 696628184.

The previous prime is 1406400679. The next prime is 1406400727. The reversal of 1406400724 is 4270046041.

It is a junction number, because it is equal to n+sod(n) for n = 1406400692 and 1406400701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406400727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642564 + ... + 1643419.

It is an arithmetic number, because the mean of its divisors is an integer number (207016992).

Almost surely, 2^1406400724 is an apocalyptic number.

It is an amenable number.

1406400724 is a deficient number, since it is larger than the sum of its proper divisors (1077803180).

1406400724 is a wasteful number, since it uses less digits than its factorization.

1406400724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286094 (or 3286092 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 1406400724 is about 37502.0095994868. The cubic root of 1406400724 is about 1120.3912121870.

Adding to 1406400724 its reverse (4270046041), we get a palindrome (5676446765).

The spelling of 1406400724 in words is "one billion, four hundred six million, four hundred thousand, seven hundred twenty-four".