39099155813 has 18 divisors (see below), whose sum is σ = 40325316534. Its totient is φ = 37896765504.

The previous prime is 39099155803. The next prime is 39099155839. The reversal of 39099155813 is 31855199093.

It can be written as a sum of positive squares in 9 ways, for example, as 5166529 + 39093989284 = 2273^2 + 197722^2 .

It is not a de Polignac number, because 39099155813 - 2¹⁰ = 39099154789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39099155803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 226006595 + ... + 226006767.

It is an arithmetic number, because the mean of its divisors is an integer number (2240295363).

Almost surely, 2^39099155813 is an apocalyptic number.

It is an amenable number.

39099155813 is a deficient number, since it is larger than the sum of its proper divisors (1226160721).

39099155813 is an frugal number, since it uses more digits than its factorization.

39099155813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 53.

Multiplying 39099155813 by its sum of digits (53), we get a square (2072255258089 = 1439533²).

39099155813 divided by its sum of digits (53) gives a square (737719921 = 27161²).

The spelling of 39099155813 in words is "thirty-nine billion, ninety-nine million, one hundred fifty-five thousand, eight hundred thirteen".