5390772921 has 24 divisors (see below), whose sum is σ = 7872126080. Its totient is φ = 3554604000.

The previous prime is 5390772883. The next prime is 5390772943. The reversal of 5390772921 is 1292770935.

5390772921 is a `hidden beast` number, since 539 + 0 + 77 + 29 + 21 = 666.

It is not a de Polignac number, because 5390772921 - 2⁶ = 5390772857 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5390772971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 331071 + ... + 346971.

Almost surely, 2^5390772921 is an apocalyptic number.

It is an amenable number.

5390772921 is a deficient number, since it is larger than the sum of its proper divisors (2481353159).

5390772921 is a wasteful number, since it uses less digits than its factorization.

5390772921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16317 (or 16314 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 5390772921 is about 73421.8831207699. The cubic root of 5390772921 is about 1753.4108086897.

The spelling of 5390772921 in words is "five billion, three hundred ninety million, seven hundred seventy-two thousand, nine hundred twenty-one".