32139409397 has 4 divisors (see below), whose sum is σ = 33830957280. Its totient is φ = 30447861516.

The previous prime is 32139409361. The next prime is 32139409453. The reversal of 32139409397 is 79390493123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79390493123 = 1699 ⋅46727777.

It is a cyclic number.

It is not a de Polignac number, because 32139409397 - 2¹⁶ = 32139343861 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 (32139409097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845773913 + ... + 845773950.

It is an arithmetic number, because the mean of its divisors is an integer number (8457739320).

Almost surely, 2^32139409397 is an apocalyptic number.

It is an amenable number.

32139409397 is a deficient number, since it is larger than the sum of its proper divisors (1691547883).

32139409397 is a wasteful number, since it uses less digits than its factorization.

32139409397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691547882.

The product of its (nonzero) digits is 1102248, while the sum is 50.

The spelling of 32139409397 in words is "thirty-two billion, one hundred thirty-nine million, four hundred nine thousand, three hundred ninety-seven".