71900393 has 2 divisors, whose sum is σ = 71900394. Its totient is φ = 71900392.

The previous prime is 71900371. The next prime is 71900417. The reversal of 71900393 is 39300917.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43138624 + 28761769 = 6568^2 + 5363^2 .

It is a cyclic number.

It is not a de Polignac number, because 71900393 - 2⁸ = 71900137 is a prime.

It is not a weakly prime, because it can be changed into another prime (71900303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35950196 + 35950197.

It is an arithmetic number, because the mean of its divisors is an integer number (35950197).

Almost surely, 2^71900393 is an apocalyptic number.

It is an amenable number.

71900393 is a deficient number, since it is larger than the sum of its proper divisors (1).

71900393 is an equidigital number, since it uses as much as digits as its factorization.

71900393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 71900393 is about 8479.4099440940. The cubic root of 71900393 is about 415.8248326404.

The spelling of 71900393 in words is "seventy-one million, nine hundred thousand, three hundred ninety-three".