34737921 has 6 divisors (see below), whose sum is σ = 50177010. Its totient is φ = 23158608.

The previous prime is 34737893. The next prime is 34737979. The reversal of 34737921 is 12973743.

It can be written as a sum of positive squares in only one way, i.e., 34680321 + 57600 = 5889^2 + 240^2 .

It is not a de Polignac number, because 34737921 - 2⁷ = 34737793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (34737991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1929876 + ... + 1929893.

It is an arithmetic number, because the mean of its divisors is an integer number (8362835).

Almost surely, 2^34737921 is an apocalyptic number.

It is an amenable number.

34737921 is a deficient number, since it is larger than the sum of its proper divisors (15439089).

34737921 is a wasteful number, since it uses less digits than its factorization.

34737921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3859775 (or 3859772 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 34737921 is about 5893.8884448215. Note that the first 3 decimals coincide. The cubic root of 34737921 is about 326.2881295991.

The spelling of 34737921 in words is "thirty-four million, seven hundred thirty-seven thousand, nine hundred twenty-one".