3490489157 has 4 divisors (see below), whose sum is σ = 3491266080. Its totient is φ = 3489712236.

The previous prime is 3490489141. The next prime is 3490489193. The reversal of 3490489157 is 7519840943.

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 3490489157 - 2⁴ = 3490489141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3490489957) 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, 381683 + ... + 390720.

It is an arithmetic number, because the mean of its divisors is an integer number (872816520).

Almost surely, 2^3490489157 is an apocalyptic number.

It is an amenable number.

3490489157 is a deficient number, since it is larger than the sum of its proper divisors (776923).

3490489157 is an equidigital number, since it uses as much as digits as its factorization.

3490489157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776922.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 3490489157 is about 59080.3618556962. The cubic root of 3490489157 is about 1516.9179754450.

The spelling of 3490489157 in words is "three billion, four hundred ninety million, four hundred eighty-nine thousand, one hundred fifty-seven".