90551949 has 8 divisors (see below), whose sum is σ = 124899360. Its totient is φ = 58286256.

The previous prime is 90551941. The next prime is 90551957. The reversal of 90551949 is 94915509.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90551941) and next prime (90551957).

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

It is not a de Polignac number, because 90551949 - 2³ = 90551941 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90551949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90551941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520327 + ... + 520500.

It is an arithmetic number, because the mean of its divisors is an integer number (15612420).

Almost surely, 2^90551949 is an apocalyptic number.

It is an amenable number.

90551949 is a deficient number, since it is larger than the sum of its proper divisors (34347411).

90551949 is a wasteful number, since it uses less digits than its factorization.

90551949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040859.

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 90551949 is about 9515.8787823301. The cubic root of 90551949 is about 449.0547218950.

The spelling of 90551949 in words is "ninety million, five hundred fifty-one thousand, nine hundred forty-nine".