90873793 has 2 divisors, whose sum is σ = 90873794. Its totient is φ = 90873792.

The previous prime is 90873787. The next prime is 90873799. The reversal of 90873793 is 39737809.

It is a balanced prime because it is at equal distance from previous prime (90873787) and next prime (90873799).

It can be written as a sum of positive squares in only one way, i.e., 73667889 + 17205904 = 8583^2 + 4148^2 .

It is a cyclic number.

It is not a de Polignac number, because 90873793 - 2²¹ = 88776641 is a prime.

It is not a weakly prime, because it can be changed into another prime (90873799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45436896 + 45436897.

It is an arithmetic number, because the mean of its divisors is an integer number (45436897).

Almost surely, 2^90873793 is an apocalyptic number.

It is an amenable number.

90873793 is a deficient number, since it is larger than the sum of its proper divisors (1).

90873793 is an equidigital number, since it uses as much as digits as its factorization.

90873793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 90873793 is about 9532.7746747733. The cubic root of 90873793 is about 449.5861099740.

It can be divided in two parts, 9087 and 3793, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 90873793 in words is "ninety million, eight hundred seventy-three thousand, seven hundred ninety-three".