9620139 has 4 divisors (see below), whose sum is σ = 12826856. Its totient is φ = 6413424.

The previous prime is 9620131. The next prime is 9620153. The reversal of 9620139 is 9310269.

9620139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9310269 = 3 ⋅3103423.

It is not a de Polignac number, because 9620139 - 2³ = 9620131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9620131) 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, 1603354 + ... + 1603359.

It is an arithmetic number, because the mean of its divisors is an integer number (3206714).

Almost surely, 2^9620139 is an apocalyptic number.

9620139 is a deficient number, since it is larger than the sum of its proper divisors (3206717).

9620139 is a wasteful number, since it uses less digits than its factorization.

9620139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206716.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 9620139 is about 3101.6348914726. The cubic root of 9620139 is about 212.6802272624.

The spelling of 9620139 in words is "nine million, six hundred twenty thousand, one hundred thirty-nine".