45400990 has 8 divisors (see below), whose sum is σ = 81721800. Its totient is φ = 18160392.

The previous prime is 45400973. The next prime is 45401039. The reversal of 45400990 is 9900454.

It is a happy number.

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

It is a super-2 number, since 2×45400990² = 4122499785960200, which contains 22 as substring.

It is a congruent number.

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, 2270040 + ... + 2270059.

It is an arithmetic number, because the mean of its divisors is an integer number (10215225).

Almost surely, 2^45400990 is an apocalyptic number.

45400990 is a deficient number, since it is larger than the sum of its proper divisors (36320810).

45400990 is a wasteful number, since it uses less digits than its factorization.

45400990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540106.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 45400990 is about 6738.0256752256. The cubic root of 45400990 is about 356.7427104674.

The spelling of 45400990 in words is "forty-five million, four hundred thousand, nine hundred ninety".