35389721 has 4 divisors (see below), whose sum is σ = 35413200. Its totient is φ = 35366244.

The previous prime is 35389687. The next prime is 35389729. The reversal of 35389721 is 12798353.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 35389721 - 2¹⁴ = 35373337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35389729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9311 + ... + 12548.

It is an arithmetic number, because the mean of its divisors is an integer number (8853300).

Almost surely, 2^35389721 is an apocalyptic number.

It is an amenable number.

35389721 is a deficient number, since it is larger than the sum of its proper divisors (23479).

35389721 is a wasteful number, since it uses less digits than its factorization.

35389721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23478.

The product of its digits is 45360, while the sum is 38.

The square root of 35389721 is about 5948.9260375298. The cubic root of 35389721 is about 328.3162507253.

The spelling of 35389721 in words is "thirty-five million, three hundred eighty-nine thousand, seven hundred twenty-one".