90981458 has 8 divisors (see below), whose sum is σ = 137747952. Its totient is φ = 45065476.

The previous prime is 90981437. The next prime is 90981461. The reversal of 90981458 is 85418909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212360 + ... + 212787.

It is an arithmetic number, because the mean of its divisors is an integer number (17218494).

Almost surely, 2^90981458 is an apocalyptic number.

90981458 is the 5099-th centered heptagonal number.

90981458 is a deficient number, since it is larger than the sum of its proper divisors (46766494).

90981458 is a wasteful number, since it uses less digits than its factorization.

90981458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425256.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 90981458 is about 9538.4200997859. The cubic root of 90981458 is about 449.7635926977.

The spelling of 90981458 in words is "ninety million, nine hundred eighty-one thousand, four hundred fifty-eight".