2139433 has 8 divisors (see below), whose sum is σ = 2278152. Its totient is φ = 2002176.

The previous prime is 2139427. The next prime is 2139461. The reversal of 2139433 is 3349312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 257049 + 1882384 = 507^2 + 1372^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2139433 - 2²¹ = 42281 is a prime.

It is a super-2 number, since 2×2139433² = 9154347122978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2139398 and 2139407.

It is not an unprimeable number, because it can be changed into a prime (2139463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5191 + ... + 5587.

It is an arithmetic number, because the mean of its divisors is an integer number (284769).

2^2139433 is an apocalyptic number.

It is an amenable number.

2139433 is a deficient number, since it is larger than the sum of its proper divisors (138719).

2139433 is a wasteful number, since it uses less digits than its factorization.

2139433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its digits is 1944, while the sum is 25.

The square root of 2139433 is about 1462.6800743840. The cubic root of 2139433 is about 128.8544921039.

The spelling of 2139433 in words is "two million, one hundred thirty-nine thousand, four hundred thirty-three".