1406897408 has 108 divisors (see below), whose sum is σ = 3439316160. Its totient is φ = 571124736.

The previous prime is 1406897381. The next prime is 1406897431. The reversal of 1406897408 is 8047986041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235385 + ... + 241287.

It is an arithmetic number, because the mean of its divisors is an integer number (31845520).

Almost surely, 2^1406897408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1406897408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719658080).

1406897408 is an abundant number, since it is smaller than the sum of its proper divisors (2032418752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1406897408 is an equidigital number, since it uses as much as digits as its factorization.

1406897408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5952 (or 5931 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1406897408 is about 37508.6311133851. The cubic root of 1406897408 is about 1120.5230889899.

The spelling of 1406897408 in words is "one billion, four hundred six million, eight hundred ninety-seven thousand, four hundred eight".