861120394 has 16 divisors (see below), whose sum is σ = 1361760480. Its totient is φ = 407270160.

The previous prime is 861120373. The next prime is 861120409. The reversal of 861120394 is 493021168.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7977 + ... + 42259.

It is an arithmetic number, because the mean of its divisors is an integer number (85110030).

Almost surely, 2^861120394 is an apocalyptic number.

861120394 is a deficient number, since it is larger than the sum of its proper divisors (500640086).

861120394 is a wasteful number, since it uses less digits than its factorization.

861120394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34965.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 861120394 is about 29344.8529388034. The cubic root of 861120394 is about 951.3813308774.

The spelling of 861120394 in words is "eight hundred sixty-one million, one hundred twenty thousand, three hundred ninety-four".