235490639 has 4 divisors (see below), whose sum is σ = 237345024. Its totient is φ = 233636256.

The previous prime is 235490623. The next prime is 235490641. The reversal of 235490639 is 936094532.

235490639 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.

It is a cyclic number.

It is not a de Polignac number, because 235490639 - 2⁴ = 235490623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 235490596 and 235490605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235490659) 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, 927002 + ... + 927255.

It is an arithmetic number, because the mean of its divisors is an integer number (59336256).

Almost surely, 2^235490639 is an apocalyptic number.

235490639 is a deficient number, since it is larger than the sum of its proper divisors (1854385).

235490639 is a wasteful number, since it uses less digits than its factorization.

235490639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854384.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 235490639 is about 15345.7042523307. The cubic root of 235490639 is about 617.5297468555.

The spelling of 235490639 in words is "two hundred thirty-five million, four hundred ninety thousand, six hundred thirty-nine".