1139597894 has 8 divisors (see below), whose sum is σ = 1721695080. Its totient is φ = 565699536.

The previous prime is 1139597887. The next prime is 1139597933. The reversal of 1139597894 is 4987959311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049359 + ... + 2049914.

It is an arithmetic number, because the mean of its divisors is an integer number (215211885).

Almost surely, 2^1139597894 is an apocalyptic number.

1139597894 is a deficient number, since it is larger than the sum of its proper divisors (582097186).

1139597894 is a wasteful number, since it uses less digits than its factorization.

1139597894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099414.

The product of its digits is 2449440, while the sum is 56.

The square root of 1139597894 is about 33757.9308311395. The cubic root of 1139597894 is about 1044.5210885215.

The spelling of 1139597894 in words is "one billion, one hundred thirty-nine million, five hundred ninety-seven thousand, eight hundred ninety-four".