902079389 has 4 divisors (see below), whose sum is σ = 941300256. Its totient is φ = 862858524.

The previous prime is 902079371. The next prime is 902079403. The reversal of 902079389 is 983970209.

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, and also an emirpimes, since its reverse is a distinct semiprime: 983970209 = 151 ⋅6516359.

It is a de Polignac number, because none of the positive numbers 2^k-902079389 is a prime.

It is a super-2 number, since 2×902079389² = 1627494448117226642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902079289) 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, 19610399 + ... + 19610444.

It is an arithmetic number, because the mean of its divisors is an integer number (235325064).

Almost surely, 2^902079389 is an apocalyptic number.

It is an amenable number.

902079389 is a deficient number, since it is larger than the sum of its proper divisors (39220867).

902079389 is a wasteful number, since it uses less digits than its factorization.

902079389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39220866.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 902079389 is about 30034.6364885610. The cubic root of 902079389 is about 966.2323786148.

The spelling of 902079389 in words is "nine hundred two million, seventy-nine thousand, three hundred eighty-nine".