7235899021 has 4 divisors (see below), whose sum is σ = 7792506652. Its totient is φ = 6679291392.

The previous prime is 7235898977. The next prime is 7235899039. The reversal of 7235899021 is 1209985327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2172864996 + 5063034025 = 46614^2 + 71155^2 .

It is a cyclic number.

It is not a de Polignac number, because 7235899021 - 2⁷ = 7235898893 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 (7235899051) 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, 278303796 + ... + 278303821.

It is an arithmetic number, because the mean of its divisors is an integer number (1948126663).

Almost surely, 2^7235899021 is an apocalyptic number.

It is an amenable number.

7235899021 is a deficient number, since it is larger than the sum of its proper divisors (556607631).

7235899021 is a wasteful number, since it uses less digits than its factorization.

7235899021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556607630.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 7235899021 is about 85064.0877280183. The cubic root of 7235899021 is about 1934.1827208678.

The spelling of 7235899021 in words is "seven billion, two hundred thirty-five million, eight hundred ninety-nine thousand, twenty-one".