47490969 has 4 divisors (see below), whose sum is σ = 63321296. Its totient is φ = 31660644.

The previous prime is 47490941. The next prime is 47491019. The reversal of 47490969 is 96909474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47490969 - 2⁷ = 47490841 is a prime.

It is a super-2 number, since 2×47490969² = 4510784273117922, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47490169) 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, 7915159 + ... + 7915164.

It is an arithmetic number, because the mean of its divisors is an integer number (15830324).

Almost surely, 2^47490969 is an apocalyptic number.

It is an amenable number.

47490969 is a deficient number, since it is larger than the sum of its proper divisors (15830327).

47490969 is a wasteful number, since it uses less digits than its factorization.

47490969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15830326.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 47490969 is about 6891.3691672990. The cubic root of 47490969 is about 362.1348688065.

The spelling of 47490969 in words is "forty-seven million, four hundred ninety thousand, nine hundred sixty-nine".