1229739057 has 16 divisors (see below), whose sum is σ = 1824120000. Its totient is φ = 818798112.

The previous prime is 1229739053. The next prime is 1229739059. The reversal of 1229739057 is 7509379221.

1229739057 is a `hidden beast` number, since 122 + 97 + 390 + 57 = 666.

It is not a de Polignac number, because 1229739057 - 2² = 1229739053 is a prime.

It is a super-2 number, since 2×1229739057² = 3024516296622498498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1229739053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6307 + ... + 49992.

It is an arithmetic number, because the mean of its divisors is an integer number (114007500).

Almost surely, 2^1229739057 is an apocalyptic number.

It is an amenable number.

1229739057 is a deficient number, since it is larger than the sum of its proper divisors (594380943).

1229739057 is an equidigital number, since it uses as much as digits as its factorization.

1229739057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57117 (or 57111 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 1229739057 is about 35067.6354634868. The cubic root of 1229739057 is about 1071.3654960125.

The spelling of 1229739057 in words is "one billion, two hundred twenty-nine million, seven hundred thirty-nine thousand, fifty-seven".