1399472767 has 16 divisors (see below), whose sum is σ = 1750401792. Its totient is φ = 1086995520.

The previous prime is 1399472761. The next prime is 1399472771. The reversal of 1399472767 is 7672749931.

It is a cyclic number.

It is not a de Polignac number, because 1399472767 - 2¹⁵ = 1399439999 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 (1399472761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4933 + ... + 53134.

It is an arithmetic number, because the mean of its divisors is an integer number (109400112).

Almost surely, 2^1399472767 is an apocalyptic number.

1399472767 is a deficient number, since it is larger than the sum of its proper divisors (350929025).

1399472767 is a wasteful number, since it uses less digits than its factorization.

1399472767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58398.

The product of its digits is 4000752, while the sum is 55.

The square root of 1399472767 is about 37409.5277569766. The cubic root of 1399472767 is about 1118.5484935618.

The spelling of 1399472767 in words is "one billion, three hundred ninety-nine million, four hundred seventy-two thousand, seven hundred sixty-seven".