90493951 has 2 divisors, whose sum is σ = 90493952. Its totient is φ = 90493950.

The previous prime is 90493943. The next prime is 90493967. The reversal of 90493951 is 15939409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90493951 - 2³ = 90493943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90493651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45246975 + 45246976.

It is an arithmetic number, because the mean of its divisors is an integer number (45246976).

Almost surely, 2^90493951 is an apocalyptic number.

90493951 is a deficient number, since it is larger than the sum of its proper divisors (1).

90493951 is an equidigital number, since it uses as much as digits as its factorization.

90493951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 90493951 is about 9512.8308615259. The cubic root of 90493951 is about 448.9588291011.

The spelling of 90493951 in words is "ninety million, four hundred ninety-three thousand, nine hundred fifty-one".