84357901 has 2 divisors, whose sum is σ = 84357902. Its totient is φ = 84357900.

The previous prime is 84357881. The next prime is 84357919. The reversal of 84357901 is 10975348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42445225 + 41912676 = 6515^2 + 6474^2 .

It is a cyclic number.

It is not a de Polignac number, because 84357901 - 2⁷ = 84357773 is a prime.

It is a super-2 number, since 2×84357901² = 14232510922251602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84357001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42178950 + 42178951.

It is an arithmetic number, because the mean of its divisors is an integer number (42178951).

Almost surely, 2^84357901 is an apocalyptic number.

It is an amenable number.

84357901 is a deficient number, since it is larger than the sum of its proper divisors (1).

84357901 is an equidigital number, since it uses as much as digits as its factorization.

84357901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 84357901 is about 9184.6557366077. The cubic root of 84357901 is about 438.5730304166.

It can be divided in two parts, 84357 and 901, that added together give a palindrome (85258).

The spelling of 84357901 in words is "eighty-four million, three hundred fifty-seven thousand, nine hundred one".