40413462961 has 3 divisors (see below), whose sum is σ = 40413663993. Its totient is φ = 40413261930.

The previous prime is 40413462949. The next prime is 40413462967. The reversal of 40413462961 is 16926431404.

The square root of 40413462961 is 201031.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 40413462961 - 2²¹ = 40411365809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40413462967) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 100516 + ... + 301546.

It is an arithmetic number, because the mean of its divisors is an integer number (13471221331).

Almost surely, 2^40413462961 is an apocalyptic number.

40413462961 is the 201031-st square number.

40413462961 is the 100516-th centered octagonal number.

It is an amenable number.

40413462961 is a deficient number, since it is larger than the sum of its proper divisors (201032).

40413462961 is an frugal number, since it uses more digits than its factorization.

40413462961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402062 (or 201031 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 40413462961 in words is "forty billion, four hundred thirteen million, four hundred sixty-two thousand, nine hundred sixty-one".