30490729 has 2 divisors, whose sum is σ = 30490730. Its totient is φ = 30490728.

The previous prime is 30490723. The next prime is 30490739. The reversal of 30490729 is 92709403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24730729 + 5760000 = 4973^2 + 2400^2 .

It is a cyclic number.

It is not a de Polignac number, because 30490729 - 2³ = 30490721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30490694 and 30490703.

It is not a weakly prime, because it can be changed into another prime (30490721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15245364 + 15245365.

It is an arithmetic number, because the mean of its divisors is an integer number (15245365).

Almost surely, 2^30490729 is an apocalyptic number.

It is an amenable number.

30490729 is a deficient number, since it is larger than the sum of its proper divisors (1).

30490729 is an equidigital number, since it uses as much as digits as its factorization.

30490729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 30490729 is about 5521.8410878981. The cubic root of 30490729 is about 312.4083280973.

The spelling of 30490729 in words is "thirty million, four hundred ninety thousand, seven hundred twenty-nine".