90249477 has 8 divisors (see below), whose sum is σ = 120381216. Its totient is φ = 60142032.

The previous prime is 90249457. The next prime is 90249491. The reversal of 90249477 is 77494209.

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

It is not a de Polignac number, because 90249477 - 2¹¹ = 90247429 is a prime.

It is a super-3 number, since 3×90249477³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90249457) 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, 6063 + ... + 14739.

It is an arithmetic number, because the mean of its divisors is an integer number (15047652).

Almost surely, 2^90249477 is an apocalyptic number.

It is an amenable number.

90249477 is a deficient number, since it is larger than the sum of its proper divisors (30131739).

90249477 is a wasteful number, since it uses less digits than its factorization.

90249477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12147.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 90249477 is about 9499.9724736443. The cubic root of 90249477 is about 448.5541694607.

The spelling of 90249477 in words is "ninety million, two hundred forty-nine thousand, four hundred seventy-seven".