49939490 has 8 divisors (see below), whose sum is σ = 89891100. Its totient is φ = 19975792.

The previous prime is 49939471. The next prime is 49939507. The reversal of 49939490 is 9493994.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46936201 + 3003289 = 6851^2 + 1733^2 .

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

It is a super-2 number, since 2×49939490² = 4987905322920200, 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, 2496965 + ... + 2496984.

Almost surely, 2^49939490 is an apocalyptic number.

49939490 is a deficient number, since it is larger than the sum of its proper divisors (39951610).

49939490 is a wasteful number, since it uses less digits than its factorization.

49939490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993956.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 49939490 is about 7066.7878134270. The cubic root of 49939490 is about 368.2544760422.

The spelling of 49939490 in words is "forty-nine million, nine hundred thirty-nine thousand, four hundred ninety".