1399136229 has 24 divisors (see below), whose sum is σ = 2052322272. Its totient is φ = 918367200.

The previous prime is 1399136209. The next prime is 1399136251. The reversal of 1399136229 is 9226319931.

1399136229 is a `hidden beast` number, since 1 + 3 + 9 + 9 + 13 + 622 + 9 = 666.

It is not a de Polignac number, because 1399136229 - 2¹³ = 1399128037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399136209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226279 + ... + 232379.

It is an arithmetic number, because the mean of its divisors is an integer number (85513428).

Almost surely, 2^1399136229 is an apocalyptic number.

It is an amenable number.

1399136229 is a deficient number, since it is larger than the sum of its proper divisors (653186043).

1399136229 is a wasteful number, since it uses less digits than its factorization.

1399136229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6497 (or 6494 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 1399136229 is about 37405.0294612904. The cubic root of 1399136229 is about 1118.4588254477.

The spelling of 1399136229 in words is "one billion, three hundred ninety-nine million, one hundred thirty-six thousand, two hundred twenty-nine".