7650421393 has 2 divisors, whose sum is σ = 7650421394. Its totient is φ = 7650421392.

The previous prime is 7650421319. The next prime is 7650421403. The reversal of 7650421393 is 3931240567.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7017747984 + 632673409 = 83772^2 + 25153^2 .

It is a cyclic number.

It is not a de Polignac number, because 7650421393 - 2⁹ = 7650420881 is a prime.

It is a super-3 number, since 3×7650421393³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7650424393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3825210696 + 3825210697.

It is an arithmetic number, because the mean of its divisors is an integer number (3825210697).

Almost surely, 2^7650421393 is an apocalyptic number.

It is an amenable number.

7650421393 is a deficient number, since it is larger than the sum of its proper divisors (1).

7650421393 is an equidigital number, since it uses as much as digits as its factorization.

7650421393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 7650421393 is about 87466.6873329498. The cubic root of 7650421393 is about 1970.4335147537.

The spelling of 7650421393 in words is "seven billion, six hundred fifty million, four hundred twenty-one thousand, three hundred ninety-three".