961099387 has 4 divisors (see below), whose sum is σ = 961313056. Its totient is φ = 960885720.

The previous prime is 961099361. The next prime is 961099397. The reversal of 961099387 is 783990169.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783990169 = 17483 ⋅44843.

It is a cyclic number.

It is not a de Polignac number, because 961099387 - 2⁷ = 961099259 is a prime.

It is a super-3 number, since 3×961099387³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961099397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99939 + ... + 109132.

It is an arithmetic number, because the mean of its divisors is an integer number (240328264).

Almost surely, 2^961099387 is an apocalyptic number.

961099387 is a deficient number, since it is larger than the sum of its proper divisors (213669).

961099387 is a wasteful number, since it uses less digits than its factorization.

961099387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213668.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 961099387 is about 31001.6029746850. The cubic root of 961099387 is about 986.8612585037.

The spelling of 961099387 in words is "nine hundred sixty-one million, ninety-nine thousand, three hundred eighty-seven".