961386408 has 40 divisors (see below), whose sum is σ = 2692773930. Its totient is φ = 320461920.

The previous prime is 961386401. The next prime is 961386443. The reversal of 961386408 is 804683169.

It can be written as a sum of positive squares in only one way, i.e., 548402724 + 412983684 = 23418^2 + 20322^2 .

It is not an unprimeable number, because it can be changed into a prime (961386401) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 741163 + ... + 742458.

Almost surely, 2^961386408 is an apocalyptic number.

It is an amenable number.

961386408 is an abundant number, since it is smaller than the sum of its proper divisors (1731387522).

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

961386408 is a wasteful number, since it uses less digits than its factorization.

961386408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483639 (or 1483626 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 961386408 is about 31006.2317607284. The cubic root of 961386408 is about 986.9594868858.

The spelling of 961386408 in words is "nine hundred sixty-one million, three hundred eighty-six thousand, four hundred eight".