1139090797 has 32 divisors (see below), whose sum is σ = 1359439200. Its totient is φ = 944283648.

The previous prime is 1139090791. The next prime is 1139090833. The reversal of 1139090797 is 7970909311.

It can be written as a sum of positive squares in 16 ways, for example, as 707240836 + 431849961 = 26594^2 + 20781^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139090797 - 2³ = 1139090789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139090791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 569403 + ... + 571399.

It is an arithmetic number, because the mean of its divisors is an integer number (42482475).

Almost surely, 2^1139090797 is an apocalyptic number.

1139090797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1139090797 is a deficient number, since it is larger than the sum of its proper divisors (220348403).

1139090797 is a wasteful number, since it uses less digits than its factorization.

1139090797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its (nonzero) digits is 107163, while the sum is 46.

The square root of 1139090797 is about 33750.4192122113. The cubic root of 1139090797 is about 1044.3661355926.

The spelling of 1139090797 in words is "one billion, one hundred thirty-nine million, ninety thousand, seven hundred ninety-seven".