49397690 has 8 divisors (see below), whose sum is σ = 88915860. Its totient is φ = 19759072.

The previous prime is 49397671. The next prime is 49397707. The reversal of 49397690 is 9679394.

It can be written as a sum of positive squares in 2 ways, for example, as 39929761 + 9467929 = 6319^2 + 3077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×49397690² = 4880263554672200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2469875 + ... + 2469894.

Almost surely, 2^49397690 is an apocalyptic number.

49397690 is a deficient number, since it is larger than the sum of its proper divisors (39518170).

49397690 is a wasteful number, since it uses less digits than its factorization.

49397690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939776.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 49397690 is about 7028.3490237751. The cubic root of 49397690 is about 366.9178838570.

The spelling of 49397690 in words is "forty-nine million, three hundred ninety-seven thousand, six hundred ninety".