906389672 has 8 divisors (see below), whose sum is σ = 1699480650. Its totient is φ = 453194832.

The previous prime is 906389669. The next prime is 906389677. The reversal of 906389672 is 276983609.

It can be written as a sum of positive squares in only one way, i.e., 830246596 + 76143076 = 28814^2 + 8726^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 906389672.

It is not an unprimeable number, because it can be changed into a prime (906389677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56649347 + ... + 56649362.

Almost surely, 2^906389672 is an apocalyptic number.

It is an amenable number.

906389672 is a deficient number, since it is larger than the sum of its proper divisors (793090978).

906389672 is a wasteful number, since it uses less digits than its factorization.

906389672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113298715 (or 113298711 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 906389672 is about 30106.3061832567. The cubic root of 906389672 is about 967.7688728291.

The spelling of 906389672 in words is "nine hundred six million, three hundred eighty-nine thousand, six hundred seventy-two".