5406807961 has 15 divisors (see below), whose sum is σ = 5693529621. Its totient is φ = 5134522668.

The previous prime is 5406807881. The next prime is 5406807971. The reversal of 5406807961 is 1697086045.

The square root of 5406807961 is 73531.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-5406807961 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5406807971) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 38897830 + ... + 38897968.

Almost surely, 2^5406807961 is an apocalyptic number.

5406807961 is the 73531-st square number.

5406807961 is the 36766-th centered octagonal number.

It is an amenable number.

5406807961 is a deficient number, since it is larger than the sum of its proper divisors (286721660).

5406807961 is an frugal number, since it uses more digits than its factorization.

5406807961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The cubic root of 5406807961 is about 1755.1476147403.

The spelling of 5406807961 in words is "five billion, four hundred six million, eight hundred seven thousand, nine hundred sixty-one".