90469047 has 4 divisors (see below), whose sum is σ = 120625400. Its totient is φ = 60312696.

The previous prime is 90469037. The next prime is 90469061. The reversal of 90469047 is 74096409.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90469047 - 2¹² = 90464951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90468996 and 90469014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90469037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15078172 + ... + 15078177.

It is an arithmetic number, because the mean of its divisors is an integer number (30156350).

Almost surely, 2^90469047 is an apocalyptic number.

90469047 is a deficient number, since it is larger than the sum of its proper divisors (30156353).

90469047 is a wasteful number, since it uses less digits than its factorization.

90469047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30156352.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 90469047 is about 9511.5218025298. The cubic root of 90469047 is about 448.9176407256.

The spelling of 90469047 in words is "ninety million, four hundred sixty-nine thousand, forty-seven".