98978423 has 2 divisors, whose sum is σ = 98978424. Its totient is φ = 98978422.

The previous prime is 98978419. The next prime is 98978461. The reversal of 98978423 is 32487989.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98978423 - 2² = 98978419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98978483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49489211 + 49489212.

It is an arithmetic number, because the mean of its divisors is an integer number (49489212).

Almost surely, 2^98978423 is an apocalyptic number.

98978423 is a deficient number, since it is larger than the sum of its proper divisors (1).

98978423 is an equidigital number, since it uses as much as digits as its factorization.

98978423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 98978423 is about 9948.7900269329. The cubic root of 98978423 is about 462.5728901919.

The spelling of 98978423 in words is "ninety-eight million, nine hundred seventy-eight thousand, four hundred twenty-three".