34742989 has 2 divisors, whose sum is σ = 34742990. Its totient is φ = 34742988.

The previous prime is 34742969. The next prime is 34742993. The reversal of 34742989 is 98924743.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 16467364 = 4275^2 + 4058^2 .

It is an emirp because it is prime and its reverse (98924743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34742989 - 2¹¹ = 34740941 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34742959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17371494 + 17371495.

It is an arithmetic number, because the mean of its divisors is an integer number (17371495).

Almost surely, 2^34742989 is an apocalyptic number.

It is an amenable number.

34742989 is a deficient number, since it is larger than the sum of its proper divisors (1).

34742989 is an equidigital number, since it uses as much as digits as its factorization.

34742989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 34742989 is about 5894.3183660199. The cubic root of 34742989 is about 326.3039964845.

The spelling of 34742989 in words is "thirty-four million, seven hundred forty-two thousand, nine hundred eighty-nine".